Introduction to the Science of Sociology Part 16

2. Inheritance of Original Nature[76]

The principles of heredity (may be recapitulated as follows):

First of all, we find useful the principle of the unit-character.

According to this principle, characters are, for the most part, inherited independently of each other, and each trait is inherited as a unit or may be broken up into characters that are so inherited.

Next, it must be recognized that characters, as such, are not inherited.

Strictly, my son has not my nose, because I still have it; what was transmitted was something that determined the shape of his nose, and that is called in brief a "determiner." So the second principle is that unit-characters are inherited through determiners in the germ cells.

And finally, it is recognized that there really is no inheritance from parent to child, but that parent and child resemble each other because they are derived from the same germ plasm, they are chips from the same old block; and the son is the half-brother to his father, by another mother.

These three principles are the three corner stones of heredity as we know it today, the principles of the independent unit-characters each derived from a determiner in the germ plasm.

How far are the known facts of heredity in man in accord with these principles? No doubt all human traits are inherited in accordance with these principles; but knowledge proceeds slowly in this field.

As a first ill.u.s.tration I may take the case of human eye color. The iris is made up of a trestle-work of fibers, in which are suspended particles that give the blue color. In addition, in many eyes much brown pigment is formed which may be small in amount and gathered around the pupil or so extensive as to suffuse the entire iris and make it all brown. It is seen, then, that the brown iris is formed by something additional to the blue. And brown iris may be spoken of as a _positive_ character, depending on a determiner for brown pigment; and blue as a _negative_ character, depending on the absence of the determiner for brown.

Now when both parents have brown eyes and come from an ancestry with brown eyes, it is probable that all of their germ cells contain the determiner for brown iris pigmentation. So when these germ cells, both carrying the determiner, unite, all of the progeny will receive the determiner from both sides of the house; consequently the determiners are double in their bodies and the resulting iris pigmentation may be said to be _duplex_. When a character is duplex in an individual, that means that when the germ cells ripen in the body of that individual each contains a determiner. So that individual is capable, so far as he is concerned, of transmitting his trait in undiminished intensity.

If a parent has pure blue eyes, that is evidence that in neither of the united germ cells from which he arose was there a determiner for iris pigmentation; consequently in respect to brown iris pigmentation such a person may be said to be _nulliplex_. If, now, such a person marry an individual duplex in eye color, in whom all of the germ cells contain the determiner, each child will receive the determiner for iris pigmentation from one side of the house only. This determiner will, of course, induce pigmentation, but the pigmentation is simplex, being induced by one determiner only. Consequently, the pigmentation is apt to be weak. When a person whose pigment determiners have come from one side of the house forms germ cells, half will have and half will lack the determiner. If such a person marry a consort all of whose germ cells contain the determiner for iris pigmentation, all of the children will, of course, receive the iris pigmentation, but in half it will be duplex and in the other half it will be simplex. If the two parents both be simplex, so that, in each, half of the germ cells possess and half lack the determiner in the union of germ cells, there are four events that are equally apt to occur: (1) an egg _with_ the determiner unites with a sperm _with_ the determiner; (2) an egg _with_ the determiner unites with a sperm _without_ the determiner; (3) an egg _without_ the determiner unites with a sperm _with_ the determiner; (4) an egg _without_ the determiner unites with a sperm _without_ the determiner.

Thus the character is duplex in one case, simplex in two cases, and nulliplex in one case; that is, one in four will have no brown pigment, or will be blue eyed. If one parent be simplex, so that the germ cells are equally with and without the determiner, while the other be nulliplex, then half of the children will be simplex and half nulliplex in eye pigment. Finally, if both parents be nulliplex in eye pigmentation (that is, blue eyed), then none of their germ cells will have the determiner, and all children will be nulliplex, or blue eyed.

The inheritance of eye color serves as a paradigm of the method of inheritance of any unit-character.

Let us now consider some of the physical traits of man that follow the same law as brown eye color, traits that are clearly positive, and due to a definite determiner in the germ plasm.

Hair color is due either to a golden-brown pigment that looks black in ma.s.ses, or else to a red pigment. The lighter tints differ from the darker by the absence of some pigment granules. If neither parent has the capacity of producing a large quant.i.ty of pigment granules in the hair, the children cannot have that capacity, that is, two flaxen-haired parents have only flaxen-haired children. But a dark-haired parent may be either simplex or duplex; and so two such parents _may_ produce children with light hair; but not more than one out of four. In general, the hair color of the children tends not to be darker than that of the darker parent. Skin pigment follows a similar rule. It is really one of the surprises of modern studies that skin pigment should be found to follow the ordinary law of heredity; it was commonly thought to blend.

The inheritance of skin color is not dependent on race; two blonds never have brunette offspring, but brunettes may have blondes. The extreme case is that of albinos with no pigment in skin, hair, and iris. Two albinos have only albino children, but albinos may come from two pigmented parents.

Similarly, straight-haired parents lack curliness, and two such have only straight-haired children. Also two tall parents have only tall children. _Shortness_ is the trait: tallness is a negative character.

Also when both parents lack stoutness (are slender), all children tend to lack it.

We may now consider briefly the inheritance of certain pathological or abnormal states, to see in how far the foregoing principles hold for them also. Sometimes the abnormal condition is positive, due to a new trait; but sometimes, on the contrary, the normal condition is the positive one and the trait is due to a defect.

Deaf-mutism is due to a defect; but the nature of the defect is different in different cases. Deaf-mutism is so varied that frequently two unrelated deaf mutes may have hearing children. But if the deaf-mute parents are cousins, the chances that the deafness is due to the _same_ unit defect are increased and all of the children will probably be deaf.

From the studies of Dr. G.o.ddard and others, it appears that when both parents are feeble-minded all of the children will be so likewise; this conclusion has been tested again and again. But if _one_ of the parents be normal and of normal ancestry, all of the children may be normal; whereas, if the normal person have defective germ cells, half of his progeny by a feeble-minded woman will be defective.

Many criminals, especially those who offend against the person, are feeble-minded, as is shown by the way they occur in fraternities with feeble-mindedness, or have feeble-minded parents. The test of the mental condition of relatives is one that may well be applied by judges in deciding upon the responsibility of an aggressor.

Not only the condition of imperfect mental development, but also that of inability to withstand stress upon the nervous system, may be inherited.

From the studies of Dr. Rosanoff and his collaborators, it appears that if both parents be subject to manic depressive insanity or to dementia prec.o.x, all children will be neuropathic also; that if one parent be affected and come from a weak strain, half of the children are liable to go insane; and that nervous breakdowns of these types never occur if both parents be of sound stock.

Finally, a study of families with special abilities reveals a method of inheritance quite like that of nervous defect. If both parents be color artists or have a high grade of vocal ability or are litterateurs of high grade, then all of their children tend to be of high grade also. If one parent has high ability, while the other has low ability but has ancestry with high ability, part of the children will have high ability and part low. It seems like an extraordinary conclusion that high ability is inherited as though due to the absence of a determiner in the same way as feeble-mindedness and insanity are inherited. We are reminded of the poet: "Great wits to madness sure are near allied."

Evidence for the relations.h.i.+p is given by pedigrees of men of genius that often show the combination of ability and insanity. May it not be that just that lack of control that permits "flights of the imagination"

is related to the flightiness characteristic of those with mental weakness or defect?

These studies of inheritance of mental defect inevitably raise the question how to eliminate the mentally defective. This is a matter of great importance because, on the one hand, it is now coming to be recognized that mental defect is at the bottom of most of our social problems. Extreme alcoholism is usually a consequence of a mental make-up in which self-control of the appet.i.te for liquor is lacking.

Pauperism is a consequence of mental defects that make the pauper incapable of holding his own in the world's compet.i.tion. s.e.x immorality in either s.e.x is commonly due to a certain inability to appreciate consequences, to visualize the inevitableness of cause and effect, combined sometimes with a s.e.x-hyperesthesia and lack of self-control.

Criminality in its worst forms is similarly due to a lack of appreciation of or receptivity to moral ideas.

If we seek to know what is the origin of these defects, we must admit that it is very ancient. They are probably derived from our ape-like ancestors, in which they were _normal_ traits. There occurs in man a strain that has not yet acquired those traits of inhibition that characterized the more highly developed civilized persons. The evidence for this is that, as far back as we go, we still trace back the black thread of defective heredity.

We have now to answer the question as to the eugenical application of the laws of inheritance of defects. First, it may be pointed out that traits due to the absence of a determiner are characterized by their usual spa.r.s.eness in the pedigree, especially when the parents are normal; by the fact that they frequently appear where cousin marriages abound, because cousins tend to carry the same defects in their germ plasm, though normal themselves; by the fact that two affected parents have exclusively normal children, while two normal parents who belong to the same strain, or who both belong to strains containing the same defect, have some (about 25 per cent) defective children. But a defective married to a pure normal will have no defective offspring.

The clear eugenical rule is then this: Let abnormals marry normals without trace of the defect, and let their normal offspring marry in turn into strong strains; thus the defect may never appear again.

Normals from the defective strain may marry normals of normal ancestry, but must particularly avoid consanguineous marriages.

The sociological conclusion is: Prevent the feeble-minded, drunkards, paupers, s.e.x-offenders, and criminalistic from marrying their like or cousins or any person belonging to a neuropathic strain. Practically it might be well to segregate such persons during the reproductive period for one generation. Then the crop of defectives will be reduced to practically nothing.

3. Inheritance of Acquired Nature: Tradition[77]

The factor in societal evolution corresponding to heredity in organic evolution is tradition; and the agency of transmission is the nervous system by way of its various "senses" rather than the germ-plasm. The organs of transmission are the eye, ear, tongue, etc., and not those of s.e.x. The term tradition, like variation and selection, is taken in the broad sense. Variation in nature causes the offspring to differ from the parents and from one another; variation in the folkways causes those of one period (or place) to differ from their predecessors and to some extent among themselves. It is the vital fact at the bottom of change.

Heredity in nature causes the offspring to resemble or repeat the present type; tradition in societal evolution causes the mores of one period to repeat those of the preceding period. Each is a stringent conservator. Variation means diversity; heredity and tradition mean the preservation of type. If there were no force of heredity or tradition, there could be no system or cla.s.sification of natural or of societal forms; the creation hypothesis would be the only tenable one, for there could be no basis for a theory of descent. If there were no variation, all of nature and all human inst.i.tutions would show a monotony as of the desert sand. Heredity and tradition allow respectively of the acc.u.mulation of organic or societal variations through repeated selection, extending over generations, in this or that direction. In short, what one can say of the general effects of heredity in the organic realm he can say of tradition in the field of the folkways. That the transmission is in the one case by way of the s.e.x organs and the germ-plasm, and in the other through the action of the vocal cords, the auditory nerves, etc., would seem to be of small moment in comparison with the essential ident.i.ty in the functions discharged.

Tradition is, in a sense and if such a comparison were profitable, more conservative than heredity. There is in the content of tradition an invariability which could not exist if it were a dual composite, as is the const.i.tution of the germ-plasm. Here we must recall certain essential qualities of the mores which we have hitherto viewed from another angle. Tradition always looks to the folkways as const.i.tuting the matter to be transmitted. But the folkways, after the concurrence in their practice has been established, come to include a judgment that they conduce to societal and, indeed, individual welfare. This is where they come to be properly called mores. They become the prosperity-policy of the group, and the young are reared up under their sway, looking to the older as the repositories of precedent and convention. But presently the older die, and in conformity with the ideas of the time, they become beings of a higher power toward whom the living owe duty, and whose will they do not wish to cross. The sanction of ghost-fear is thus extended to the mores, which, as the prosperity-policy of the group, have already taken on a stereotyped character. They thus become in an even higher degree "uniform, universal in a group, imperative, invariable. As time goes on, they become more and more arbitrary, positive, and imperative.

If asked why they act in a certain way in certain cases, primitive people always answer that it is because they and their ancestors always have done so." Thus the transmission of the mores comes to be a process embodying the greatest conservatism and the least likelihood of change.

This situation represents an adaption of society to life-conditions; it would seem that because of the rapidity of succession of variations there is need of an intensely conserving force (like ethnocentrism or religion) to preserve a certain balance and poise in the evolutionary movement.

Transmission of the mores takes place through the agency of imitation or of inculcation; through one or the other according as the initiative is taken by the receiving or the giving party respectively. Inculcation includes education in its broadest sense; but since that term implies in general usage a certain, let us say protective, att.i.tude taken by the educator (as toward the young), the broader and more colorless designation is chosen. Acculturation is the process by which one group or people learns from another, whether the culture or civilization be gotten by imitation or by inculcation. As there must be contact, acculturation is sometimes ascribed to "contagion."

4. Temperament, Tradition, and Nationality[78]

The temperament of the Negro, as I conceive it, consists in a few elementary but distinctive characteristics, determined by physical organizations and transmitted biologically. These characteristics manifest themselves in a genial, sunny, and social disposition, in an interest and attachment to external, physical things rather than to subjective states and objects of introspection, in a disposition for expression rather than enterprise and action.

The changes which have taken place in the manifestations of this temperament have been actuated by an inherent and natural impulse, characteristic of all living beings, to persist and maintain itself in a changed environment. Such changes have occurred as are likely to take place in any organism in its struggle to live and to use its environment to further and complete its own existence.

The result has been that this racial temperament has selected out of the ma.s.s of cultural materials to which it had access, such technical, mechanical, and intellectual devices as met its needs at a particular period of its existence. It has clothed and enriched itself with such new customs, habits, and cultural forms as it was able, or permitted to use. It has put into these relatively external things, moreover, such concrete meanings as its changing experience and its unchanging racial individuality demanded. Everywhere and always it has been interested rather in expression than in action; interested in life itself rather than in its reconstruction or reformation. The Negro is, by natural disposition, neither an intellectual nor an idealist, like the Jew; nor a brooding introspective, like the East Indian; nor a pioneer and frontiersman, like the Anglo-Saxon. He is primarily an artist, loving life for its own sake. His _metier_ is expression rather than action. He is, so to speak, the lady among the races.

In reviewing the fortunes of the Negro's temperament as it is manifested in the external events of the Negro's life in America, our a.n.a.lysis suggests that this racial character of the Negro has exhibited itself everywhere in something like the role of the _wish_ in the Freudian a.n.a.lysis of dream-life. The external cultural forms which he found here, like the memories of the individual, have furnished the materials in which the racial wish, i.e., the Negro temperament, has clothed itself.

The inner meaning, the sentiment, the emphasis, the emotional color, which these forms a.s.sumed as the result of their transference from the white man to the Negro, these have been the Negro's own. They have represented his temperament--his temperament modified, however, by his experience and the tradition which he has acc.u.mulated in this country.

The temperament is African, but the tradition is American.

If it is true that the Jew just because of his intellectuality is a natural-born idealist, internationalist, doctrinaire, and revolutionist, while the Negro, because of his natural attachment to known familiar objects, places, and persons, is pre-adapted to conservatism and to local and personal loyalties--if these things are true, we shall eventually have to take account of them practically. It is certain that the Negro has uniformly shown a disposition to loyalty during slavery to his master and during freedom to the South and the country as a whole.

He has maintained this att.i.tude of loyalty, too, under very discouraging circ.u.mstances. I once heard Kelly Miller, the most philosophical of the leaders and teachers of his race, say in a public speech that one of the greatest hards.h.i.+ps the Negro suffered in this country was due to the fact that he was not permitted to be patriotic.

Of course all these alleged racial characteristics have a positive as well as a negative significance. Every race, like every individual, has the vices of its virtues. The question remains still to what extent so-called racial characteristics are actually racial, i.e., biological, and to what extent they are the effect of environmental conditions. The thesis of this paper, to state it again, is: (1) that fundamental temperamental qualities, which are the basis of interest and attention, act as selective agencies and as such determine what elements in the cultural environment each race will select; in what region it will seek and find its vocation in the larger social organization; (2) that, on the other hand, technique, science, machinery, tools, habits, discipline, and all the intellectual and mechanical devices with which the civilized man lives and works remain relatively external to the inner core of significant att.i.tudes and values which const.i.tute what we may call the will of the group. This racial will is, to be sure, largely social, that is, modified by social experience, but it rests ultimately upon a complex of inherited characteristics, which are racial.

The individual man is the bearer of a double inheritance. As a member of a race, he transmits by interbreeding a biological inheritance. As a member of society or a social group, on the other hand, he transmits by communication a social inheritance. The particular complex of inheritable characters which characterizes the individuals of a racial group const.i.tutes the racial temperament. The particular group of habits, accommodations, sentiments, att.i.tudes, and ideals transmitted by communication and education const.i.tutes a social tradition. Between this temperament and this tradition there is, as has been generally recognized, a very intimate relations.h.i.+p. My a.s.sumption is that temperament is the basis of the interests; that as such it determines in the long run the general run of attention, and this, eventually, determines the selection in the case of an individual of his vocation, in the case of the racial group of its culture. That is to say, temperament determines what things the individual and the group will be interested in; what elements of the general culture, to which they have access, they will a.s.similate; what, to state it pedagogically, they will learn.

It will be evident at once that where individuals of the same race and hence the same temperament are a.s.sociated, the temperamental interests will tend to reinforce one another, and the attention of members of the group will be more completely focused upon the specific objects and values that correspond to the racial temperament. In this way racial qualities become the basis for nationalities, a nationalistic group being merely a cultural and, eventually, a political society founded on the basis of racial inheritances.

On the other hand, when racial segregation is broken up and members of a racial group are dispersed, the opposite effect will take place. This explains the phenomena which have frequently been the subject of comment and observation, that the racial characteristics manifest themselves in an extraordinary way in large h.o.m.ogeneous gatherings. The contrast between a ma.s.s meeting of one race and a similar meeting of another is particularly striking. Under such circ.u.mstances characteristic racial and temperamental differences appear that would otherwise pa.s.s entirely unnoticed.

When the physical unity of a group is perpetuated by the succession of parents and children, the racial temperament, including fundamental att.i.tudes and values which rest in it, is preserved intact. When, however, society grows and is perpetuated by immigration and adaptation, there ensues, as a result of miscegenation, a breaking up of the complex of the biologically inherited qualities which const.i.tute the temperament of the race. This again initiates changes in the mores, traditions, and eventually in the inst.i.tutions of the community. The changes which proceed from modification in the racial temperament will, however, modify but slightly the external forms of the social traditions, but they will be likely to change profoundly their content and meaning. Of course other factors, individual compet.i.tion, the formation of cla.s.ses, and especially the increase of communication, all co-operate to complicate the whole situation and to modify the effects which would be produced by racial factors working in isolation.