Selections from Previous Works Part 13

From this Mr. Romanes goes on to show "that automatic actions and conscious habits may be inherited," {234b} and in the course of doing this contends that "instincts may be lost by disuse, and conversely that they may be acquired as instincts by the hereditary transmission of ancestral experience." {234c}

On another page Mr. Romanes says:--

"Let us now turn to the second of these two a.s.sumptions, viz., that some at least among migratory birds must possess, by inheritance alone, a very precise knowledge of the particular direction to be pursued. It is without question an astonis.h.i.+ng fact that a young cuckoo should be prompted to leave its foster parents at a particular season of the year, and without any guide to show the course previously taken by its own parents, but this is a fact which must be met by any theory of instinct which aims at being complete. Now upon our own theory it can only be met by taking it to be due to inherited memory." {234d}

Mr. Romanes says in a note that this theory was first advanced by Canon Kingsley in _Nature_, January 18, 1867, a piece of information which I learn for the first time; otherwise, as I need hardly say, I should have called attention to it in my own books on evolution. _Nature_ did not begin to appear till the end of 1869, and I can find no communication from Canon Kingsley bearing upon hereditary memory in any number of _Nature_ prior to the date of Canon Kingsley's death; but no doubt Mr.

Romanes has only made a slip in his reference. Mr. Romanes also says that the theory connecting instinct with inherited memory "has since been independently 'suggested' by many writers."

A little lower Mr. Romanes says: "Of what kind, then, is the inherited memory on which the young cuckoo (if not also other migratory birds) depends? We can only answer, of the same kind, whatever this may be, as that upon which the old bird depends." {235}

I have given above most of the more marked pa.s.sages which I have been able to find in Mr. Romanes' book which attribute instinct to memory, and which admit that there is no fundamental difference between the kind of memory with which we are all familiar and hereditary memory as transmitted from one generation to another. But throughout his work there are pa.s.sages which suggest, though less obviously, the same inference.

The pa.s.sages I have quoted show that Mr. Romanes is upholding the same opinions as Professor Hering's and my own, but their effect and tendency is more plain here than in Mr. Romanes' own book, where they are overlaid by nearly 400 long pages of matter which is not always easy of comprehension.

The late Mr. Darwin himself, indeed--whose mantle seems to have fallen more especially and particularly on Mr. Romanes--could not contradict himself more hopelessly than Mr. Romanes often does. Indeed in one of the very pa.s.sages I have quoted in order to show that Mr. Romanes accepts the phenomena of heredity as phenomena of memory, he speaks of "heredity as playing an important part _in forming memory_ of ancestral experiences;" so that whereas I want him to say that the phenomena of heredity are due to memory, he will have it that the memory is due to the heredity, {236a} which seems to me absurd.

Over and over again Mr. Romanes insists that it is heredity which does this or that. Thus it is "_heredity with natural selection which adapt_ the anatomical plan of the ganglia." {236b} It is heredity which impresses nervous changes on the individual. {236c} "In the lifetime of species actions originally intelligent may by frequent repet.i.tion _and heredity_," &c. {236d}; but he nowhere tells us what heredity is any more than Messrs. Herbert Spencer, Darwin, and Lewes have done. This, however, is, exactly what Professor Hering, whom I have unwittingly followed, does. He resolves all phenomena of heredity, whether in respect of body or mind, into phenomena of memory. He says in effect, "A man grows his body as he does, and a bird makes her nest as she does, because both man and bird remember having grown body and made nest as they now do, or very nearly so, on innumerable past occasions." He thus reduces life from an equation of say 100 unknown quant.i.ties to one of 99 only by showing that heredity and memory, two of the original 100 unknown quant.i.ties, are in reality part of one and the same thing.

That he is right Mr. Romanes seems to me to admit, though in a very unsatisfactory way.

REMARKS ON MR. ROMANES' MENTAL EVOLUTION IN ANIMALS--(_continued_).

I will give examples of my meaning. Mr. Romanes says on an early page, "The most fundamental principle of mental operation is that of memory, for this is the _conditio sine qua non_ of all mental life" (page 35).

I do not understand Mr. Romanes to hold that there is any living being which has no mind at all, and I do understand him to admit that development of body and mind are closely interdependent.

If then, "the most fundamental principle" of mind is memory, it follows that memory enters also as a fundamental principle into development of body. For mind and body are so closely connected that nothing can enter largely into the one without correspondingly affecting the other.

On a later page, indeed, Mr. Romanes speaks point-blank of the new-born child as "_embodying_ the results of a great ma.s.s of _hereditary experience_" (p. 77), so that what he is driving at can be collected by those who take trouble, but is not seen until we call up from our own knowledge matter whose relevancy does not appear on the face of it, and until we connect pa.s.sages many pages asunder, the first of which may easily be forgotten before we reach the second. There can be no doubt, however, that Mr. Romanes does in reality, like Professor Hering and myself, regard development, whether of mind or body, as due to memory, for it is nonsense indeed to talk about "hereditary experience" or "hereditary memory" if anything else is intended.

I have said above that on page 113 of his recent work Mr. Romanes declares the a.n.a.logies between the memory with which we are familiar in daily life, and hereditary memory, to be "so numerous and precise" as to justify us in considering them as of one and the same kind.

This is certainly his meaning, but, with the exception of the words within inverted commas, it is not his language. His own words are these:--

"Profound, however, as our ignorance unquestionably is concerning the physical substratum of memory, I think we are at least justified in regarding this substratum as the same both in ganglionic or organic, and in conscious or psychological memory, seeing that the a.n.a.logies between them are so numerous and precise. Consciousness is but an adjunct which arises when the physical processes, owing to infrequency of repet.i.tion, complexity of operation, or other causes, involve what I have before called ganglionic friction."

I submit that I have correctly translated Mr. Romanes' meaning, and also that we have a right to complain of his not saying what he has to say in words which will involve less "ganglionic friction" on the part of the reader.

Another example may be found on p. 43 of Mr. Romanes' book. "Lastly," he writes, "just as innumerable special mechanisms of muscular co-ordinations are found to be inherited, innumerable special a.s.sociations of ideas are found to be the same, and in one case as in the other the strength of the organically imposed connection is found to bear a direct proportion to the frequency with which in the history of the species it has occurred."

Mr. Romanes is here intending what the reader will find insisted on on p.

98 of the present volume; but how difficult he has made what could have been said intelligibly enough, if there had been nothing but the reader's comfort to be considered. Unfortunately that seems to have been by no means the only thing of which Mr. Romanes was thinking, or why, after implying and even saying over and over again that instinct is inherited habit due to inherited memory, should he turn sharply round on p. 297 and praise Mr. Darwin for trying to snuff out "the well-known doctrine of inherited habit as advanced by Lamarck"? The answer is not far to seek.

It is because Mr. Romanes did not merely want to tell us all about instinct, but wanted also, if I may use a homely metaphor, to hunt with the hounds and run with the hare at one and the same time.

I remember saying that if the late Mr. Darwin "had told us what the earlier evolutionists said, why they said it, wherein he differed from them, and in what way he proposed to set them straight, he would have taken a course at once more agreeable with usual practice, and more likely to remove misconception from his own mind and from those of his readers." {239} This I have no doubt was one of the pa.s.sages which made Mr. Romanes so angry with me. I can find no better words to apply to Mr.

Romanes himself. He knows perfectly well what others have written about the connection between heredity and memory, and he knows no less well that so far as he is intelligible at all he is taking the same view that they have taken. If he had begun by saying what they had said and had then improved on it, I for one should have been only too glad to be improved upon.

Mr. Romanes has spoiled his book just because this plain old-fas.h.i.+oned method of procedure was not good enough for him. One-half the obscurity which makes his meaning so hard to apprehend is due to exactly the same cause as that which has ruined so much of the late Mr. Darwin's work--I mean to a desire to appear to be differing altogether from others with whom he knew himself after all to be in substantial agreement. He adopts, but (probably quite unconsciously) in his anxiety to avoid appearing to adopt, he obscures what he is adopting.

Here, for example, is Mr. Romanes' definition of instinct:--

"Instinct is reflex action into which there is imported the element of consciousness. The term is therefore a generic one, comprising all those faculties of mind which are concerned in conscious and adaptive action, antecedent to individual experience, without necessary knowledge of the relation between means employed and ends attained, but similarly performed under similar and frequently recurring circ.u.mstances by all the individuals of the same species." {240}

If Mr, Romanes would have been content to build frankly upon Professor Hering's foundation, the soundness of which he has elsewhere abundantly admitted, he might have said--

"Instinct is knowledge or habit acquired in past generations--the new generation remembering what happened to it before it parted company with the old." Then he might have added as a rider--

"If a habit is acquired as a new one, during any given lifetime, it is not an instinct. If having been acquired in one lifetime it is transmitted to offspring, it is an instinct in the offspring though it was not an instinct in the parent. If the habit is transmitted partially, it must be considered as partly instinctive and partly acquired."

This is easy; it tells people how they may test any action so as to know what they ought to call it; it leaves well alone by avoiding all such debatable matters as reflex action, consciousness, intelligence, purpose, knowledge of purpose, &c.; it both introduces the feature of inheritance which is the one mainly distinguis.h.i.+ng instinctive from so-called intelligent actions, and shows the manner in which these last pa.s.s into the first, that is to say, by way of memory and habitual repet.i.tion; finally it points the fact that the new generation is not to be looked upon as a new thing, but (as Dr. Erasmus Darwin long since said {241}) as "a branch or elongation" of the one immediately preceding it.

But then to have said this would have made it too plain that Mr. Romanes was following some one else. Mr. Romanes should remember that no one would mind how much he took if he would only take it well. But this is what those who take without due acknowledgment never do.

In Mr. Darwin's case it is hardly possible to exaggerate the waste of time, money, and trouble that has been caused by his not having been content to appear as descending with modification like other people from those who went before him. It will take years to get the evolution theory out of the mess in which Mr. Darwin has left it. He was heir to a discredited truth; he left behind him an accredited fallacy. Mr.

Romanes, if he is not stopped in time, will get the theory connecting heredity and memory into just such another muddle as Mr. Darwin has got Evolution, for surely the writer who can talk about "_heredity being able to work up_ the faculty of homing into the instinct of migration," {242a} or of "the principle of (natural) selection combining with that of lapsing intelligence to the formation of a joint result," {242b} is little likely to depart from the usual methods of scientific procedure with advantage either to himself or any one else. Fortunately Mr.

Romanes is not Mr. Darwin, and though he has certainly got Mr. Darwin's mantle, and got it very much too, it will not on Mr. Romanes' shoulders hide a good deal that people were not going to observe too closely while Mr. Darwin wore it.

REMARKS ON MR. ROMANES' MENTAL EVOLUTION IN ANIMALS--(_concluded_).

I gather that in the end the late Mr. Darwin himself admitted the soundness of the view which the reader will have found insisted upon in the extracts from my earlier books given in this volume. Mr. Romanes quotes a letter written by Mr. Darwin in the last year of his life, in which he speaks of an intelligent action gradually becoming "_instinctive_, _i.e._, _memory transmitted from one generation to another_." {243a}

Briefly, the stages of Mr. Darwin's opinion upon the subject of hereditary memory are as follows:--

1859. "It would be _the most serious error_ to suppose that the greater number of instincts have been acquired by habit in one generation and transmitted by inheritance to succeeding generations." {243b} And this more especially applies to the instincts of many ants.

1876. "It would be _a serious error_ to suppose" &c., as before. {243c}

1881. "We should remember _what a ma.s.s of inherited knowledge_ is crowded into the minute brain of a worker ant." {243d}

1881 or 1882. Speaking of a given habitual action Mr. Darwin writes:--"It does not seem to me at all incredible that this action [and why this more than any other habitual action?] should then become instinctive:" _i.e._, _memory transmitted from one generation to another_. {244a}

And yet in 1839 or thereabouts, Mr. Darwin had pretty nearly grasped the conception from which until the last year or two of his life he so fatally strayed; for in his contribution to the volumes giving an account of the voyages of the _Adventure_ and _Beagle_, he wrote: "Nature by making habit omnipotent and its effects hereditary, has fitted the Fuegian for the climate and productions of his country" (p. 237).

What is the secret of the long departure from the simple common-sense view of the matter which he took when he was a young man? I imagine simply what I have referred to in the preceding chapter,--over-anxiety to appear to be differing from his grandfather, Dr. Erasmus Darwin, and Lamarck.

I believe I may say that Mr. Darwin before he died not only admitted the connection between memory and heredity, but came also to see that he must readmit that design in organism which he had so many years opposed. For in the preface to Hermann Muller's Fertilisation of Flowers, {244b} which bears a date only a very few weeks prior to Mr. Darwin's death, I find him saying:--"Design in nature has for a long time deeply interested many men, and though the subject must now be looked at from a somewhat different point of view from what was formerly the case, it is not on that account rendered less interesting." This is mused forth as a general gnome, and may mean anything or nothing: the writer of the letterpress under the hieroglyph in Old Moore's Almanac could not be more guarded; but I think I know what it does mean.

I cannot of course be sure; Mr. Darwin did not probably intend that I should; but I a.s.sume with confidence that whether there is design in organism or no, there is at any rate design in this pa.s.sage of Mr.

Darwin's. This, we may be sure, is not a fortuitous variation; and moreover it is introduced for some reason which made Mr. Darwin think it worth while to go out of his way to introduce it. It has no fitness in its connection with Hermann Muller's book, for what little Hermann Muller says about teleology at all is to condemn it; why then should Mr. Darwin muse here of all places in the world about the interest attaching to design in organism? Neither has the pa.s.sage any connection with the rest of the preface. There is not another word about design, and even here Mr. Darwin seems mainly anxious to face both ways, and pat design as it were on the head while not committing himself to any proposition which could be disputed.

The explanation is sufficiently obvious. Mr. Darwin wanted to hedge. He saw that the design which his works had been mainly instrumental in pitchforking out of organisms no less manifestly designed than a burglar's jemmy is designed, had nevertheless found its way back again, and that though, as I insisted in Evolution, Old and New, and Unconscious Memory, it must now be placed within the organism instead of outside it, as "was formerly the case," it was not on that account any the less--design, as well as interesting.