An Introduction to Chemical Science Part 27

Thistle-tubes.

Filter-stands.

Beakers.

Gla.s.s tubing (3/16 in., 1/4 in., and 1 in. outside).

Rubber tubing (1/8 in., and 3/8 in. inside).

Hessian crucibles.

Porcelain crucibles.

Electrolytic apparatus, including 2 or more Bunsen cells.

Ignition-tubes.

Steel gla.s.s-cutters.

Wire-cutters.

Calcium chloride tubes.

Water baths.

Thermometers.

Barometers, etc.

APPENDIX.

CHEMICALS.

The following estimate is for twenty pupils: - Alcohol 1 pt Alum 1 oz Ammonium chloride 1/2 lb Ammonium hydrate 1 lb Ammonium nitrate. 1/2 lb Antimony (powdered metallic) 1/2 oz.

a.r.s.enic (powdered metallic) 1/2 oz.

a.r.s.enic trioxide..... 1 oz.

Barium chloride..... 1 oz.

Barium nitrate..... 1 oz.

Beeswax....... 1 oz.

Bleaching-powder.... 1/4 lb.

Bone-black...... 1/2 lb.

Bromine....... 1/4 lb.

Calcium chloride.... 1 lb.

Calcium fluoride (powdered) 1 lb.

Cannel coal 1 lb Carbon disulphide 1/4 lb Chlorhydric acid 6 lb Cochineal 1 oz Copper (filings) 2 lb.

Copper nitrate 1 oz Copper oxide 1/4 lb.

Ether (sulphuric) 1/4 lb Ferrous sulphide 1 lb.

Ferrous sulphate 1/4 lb Indigo 1/4 lb Iodine 1 oz Iron (filings or turnings) 1 lb.

Lead (sheet) 4 lb Lead acetate 1 oz Lead nitrate 1/4 lb Litmus 1/2 oz Litmus paper 3 sheets Magnesium ribbon.... 3 ft.

Manganese dioxide.... 2 lb.

Mercurous nitrate.... 1/2 oz.

Nitric acid 3 lb.

Oxalic acid 1/4 lb Phosphorus 1/4 lb Pota.s.sium (metallic) 1/8 oz Pota.s.sium bromide 1/4 lb.

Pota.s.sium dichromate 1/4 lb.

Pota.s.sium chlorate 2 lb.

Pota.s.sium hydrate 1/4 lb.

Pota.s.sium iodide 2 oz Pota.s.sium nitrate 1/4 llb Silver nitrate 1 oz.

Sodium 1/8 oz.

Sodium carbonate 1/4 lb Sodium hydrate 1 lb.

Sodium nitrate 1/2 lb Sodium silicate..... 1/2lb Turkey red cloth.... 1/2yd Sodium sulphate..... 1/4lb Turpentine(spirits). 1/4lb Sodium sulphide..... 1/4lb Zinc(granulated).... 2lb Sodium thiosulphate. 1/4lb Zinc foil........... 3ft Sulphur............. 2lb Sulphuric acid...... 12lb

Additional Material

These substances are best obtained of local dealers.

Calcium carbonate(marble)..... 1lb Mola.s.ses...................... 1pt Calcium oxide(unslaked lime).. 1lb Sodium chloride(fine)......... 1lb Charcoal...................... 1lb Sodium chloride(coa.r.s.e)....... 1lb Sheet lead.................... 4lb Sugar......................... 1/2lb

FOR EXAMINATION

Those in capitals are most important

Rocks and Minerals.

ARGILLITE, ARESENIC, a.r.s.eNOPYRITE, Barite, CALCITE, Ca.s.sITERITE, CHALCOPYRITE, CHALK, CINNABAR, COPPER (native), Corundum, Dolomite, EMERY, FELDSPAR, Flint, GALENITE, GRANITE, GRAPHITE, GYPSUM, HEMAt.i.tE, Hornblende, Jasper, LIMONITE, MAGNESITE, MAGNEt.i.tE, MALACHITE, Meerschaum, MICA, OBSIDIAN, Orpiment, PYRITE, QUARTZ, Realgar, SAND, SERPENTINE, SIDERITE, SPHALERITE, Talc, ZINCITE

Metals and Alloys.

Aluminium,Iron (cast), Aluminium bronze.Pewter, Bell metal,Solder, Bra.s.s, Steel, Bronze,Type metal, Copper,Tin foil, Galvanized iron,Tin (bright plate and terne plate), German silver, Zinc (sheet).

Iron (wrought)

Additional Compounds, for Examination:

Copper acetate,Lead carbonate, Copper a.r.s.enite,Red lead, Copper nitrate,Magnesia alba, Copper sulphate,Smalt, Lead dioxide,Vermilion.

Lead protoxide,

TABLE OF SOLUTIONS.

Number of grams of solids to be dissolved in 500cc of water.

AgNO3.........25K2Al2(SO4)4......50 BaCl2.........50KBr.... 25 Ba(N0 3)2........30 K2Cr207........50 CaClz......... 60KI.......... 25 Ca(OH)2...... saturatedKOH....... 60 CaS04....... saturatedNaICOS........ 50 CUC12 50NaOH 60 Cu(N03).........50NalSl03....... saturated FeS04.........50NH,N03........50 HgC12......... 30Pb(C2H302)2......50 HgN03..... 25 + 25 HN03Pb(NOs)2........ 50

Other solutions....saturated.

Indigo solution (sulphindigotic acid) is prepared by heating for several hours over a water bath, a mixture of ten parts of H 2SO4 with one of indigo, and, after letting it stand twenty-four hours, adding twenty parts of water and filtering.

TEXTBOOK ADVERTIs.e.m.e.nTS THAT APPEARED IN THE ORIGINAL EDITION

INTRODUCTION TO CHEMICAL SCIENCE

By R.P. WILLIAMS, Instructor in Chemistry in the English High School, Boston. l2mo. Cloth. 216 pages. By mail, 90 cents; for introduction, 80 cents.

This work is strictly, but easily, inductive. The pupil is stimulated by query and suggestion to observe important phenomena, and to draw correct conclusions. The experiments are ill.u.s.trative, the apparatus is simple and easily made. The nomenclature, symbols, and writing of equations are made prominent features. In descriptive and theoretical chemistry, the arrangement of subjects is believed to be especially superior in that it presents, not a mere aggregation of facts, but the science of chemistry. Brevity aud concentration, induction, clearness, accuracy, and a legitimate regard for interest, are leading characteristics. The treatment is full enough for any high school or academy.

Though the method is an advanced one, it has been so simplified that pupils experience no difficulty, but rather an added interest, in following it.

The author himself has successfully employed this method in cla.s.ses so large that the simplest and most practical plan has been a necessity.

Thomas C. Van Nuys, Professor of Chemistry, Indiana University, Bloomington, Ind.: