on an introductory page. These errors are obvious and harmless, though, of course, unfortunate. The printing is clear, on good paper, and the book is well bound. The hook is commended for its content and organization. It should prove an excellent manual for students in the second semester or second year of the college course, for students' autonomous study, or as a reference book for either student or teacher.
as a source of raw material for gas, motor spirits, dyes and certain explosives, is without substitute." ". . . . . . . . In a n electric furnace a temperature three times as high (as burning coal under forced draft) is obtainable, about 4100°C.; this is not so very far from the estimated temperature of the sun's surface, 6200°C." ". . . . . . . The utilization of gases on an industrial scale is one of the triumphs of present-day chemical engineering." A ~ n o c acol*eoe WM. A. HAMMOND I n 1931 there were produced in the United States 851 million YBLLOW SPRWDS. 0110 barrels of crude oil, and from these 16,649 million gallons of gasoline. These figures show that petroleum and its products are necessities in the modern world." ". . . . . . the chemist or INDUSTRIAL CHEMISTRY.AN ELEMENTARY WATISE FOR THE engineer uses coal and limestone, for example, and produces from STUDENT AND GENERALREADER. Revised Edition. Rmil Raymond Riegel, Ph.D., Professor of Industrial Chemistry, them the delicate and volatile acetate eaters. This makes true From rocks to ethereal solvents." ". . . . The " University of Buffalo, with the support of a large number of the sloean: collaborators. The Chemical Catalog Co., Inc., New York manufnrtnre of dye intcrnmediates is thc must brilliant succesa uf isnthcttc organic chcmtstr).." ' . . . synthctlc organic dyes. City, 1933. 784 pp. 233 Figs. 16 X 23 cm. $6.00. . . . . . have a brilliancy never approached by natural dyes The following specialists have coaperated with the author in . .. . . . Lavoisier himself was the manager of the powder works connection with subjects as indicated here: Daniel E. Sharp of the French Government just before the revolution of 1789.'' (structural glass, optical glass, special glass, and glass bottles), ". . . . . The synthetic resins have afforded the first big lesson Benjamin F. Clark (water for municipalities and for industrial to the chemical investigator, that the humble 'tars' may have their purposes, sewage disposal plants), Robert Knoch (dye application uses." ". . The history of tanning reaches as far hack as and the manufacture of dyes), Earl Booth (essential oils, perfume the history of man; compared with it, the science of chemistry is sundries, flavors, pharmaceutical), Amos A. Fries (chemical indeed young. Yet in the past fifty years, chemistry has furfactors other than explosives in warfare), H. F. Lichtenberg nished the tanner a new method, chrome tanning." ". . . . The (leather, gelatins, and glue), J. William Ellis (patents), and process of Bessemer (1855) was discovered independently by Kenneth McAlpine (pig iron). H. E. Howe gave "detailed Kelly of Kentucky in 1847." " . . Gold is a unique comcriticism of a number of chapters and general criticism of the modity in that its price does not fluctuate with supply and demanuscript as a whole." mand, but is fixed by law." The author's revision of the first edition (1928) [for a review Low temperature carbonization receives only meager attention. of this edition. see J. CHEM. EDVC..5. 1709-10 (Dec.. 1928)l as the total of one paragraph would indicate. Nothing is said of has resulted in a book of considerabli increased size, namely, activated carbon as a by-product in wood pulp manufacture. seven hundred eighty-four pages as against six hundred forty-nine The title of Chapter 25, "Synthetic and Semi-synthetic (increase of one hundred thirty-five); and two hundred thirtyChemicals," the material selected, as well as the treatment are three figures as against one hundred seventy-two (an increase of commended. The author has brought together facts concerning sixty-one). The chapters which have been increased ten or niore synthesesin theacetyleneand ethylene series that are new enough pages deal with sulfuric acid (11 pages), caustic soda and chlo- to warrant attention. Fullei information will be sought for by rine (12 pages). and phenol resins (15 pages). Chapters which many, as here points the way to an enormous field for industrial have been increased by five or more pages are: salt, soda ash. production and research. salt cake, hydrochloric acid, Glauber salt, sodium silicate Three chapters an dyes have a cordial welcome. The treatbromine (8 pages); fuels, steam boilers, hydroelectric power. ment is sufficiently comprehensive to serve as a source of insteam power and production of cold (6 pages) ; processes based on formation far those wishing a brief .-and concise statement activity of yeasts (9 pages); petroleum and its products (5 concerning the dye industry. ~ h e ' i d e athat students should pages), animal and vegetable oils and fats (5 pages); pigments, have more training in dye intermediates and dyes, than is compaints, varnish, lacquers, printing ink (7 pages). Chapters with monly offered in first courses in organic chemistry, is not exincreases of two or more pages are: synthetic nitrogen products pressed but is nevertheless easily evident. The educational (4 pages); portlaud cement, lime and gypsum plaster (2 pages); value of the book is strengthened through the presentation of pottery, common bricks, refractory bricks and crucibles, vitrified the subject matter of these chapters, enamel (2 pages); the distillation of c o d (4 pages); the byThe author and publishers have done a e ~ c by e enlarging products and distillation of pine sap and wood for turpentine and revising this book. I t is now of increased value as a textbook (3 pages); soap and glycerin (3 pages); evaeorators, driers, and a book of reference. The price of the present volume ($6.00) Cottrell precipitator, and others (2 pages) ; leather, gelatin, and is fair and reasonable. glue (2 pages); materials used by the chemical engineer (Chapter FRIENDE. CLARK 45, 2 pages); instruments of control used by. the chemical engiWkm V ~ D I N I A UNIVBP.SIW MOROANIOWN. WBST v*. neer (Chapter 46, 2 pages); steel (2 pages). The total number of chapters of the present edition remains the same, namely, fifty. Chapters I and I1 (sulfuric acid) of the IILWBOOK OF CREMISTR\. AND PHYSFCS. Clmrks D. H o d g m n . Kditor-inchief. I
