620
T H E J O C R S A L OF I+\-D[-STRIA4L A S D E S G I , Y E E R I S G C H E S f I S T R Y
in calibrating the turbidimeter must be carefully followed in all subsequent determinations. No originality is claimed for the turbidimetric method described in our paper; it is merely an account of the results obtained in an effort t o adapt the method t o a new use. R . S. MCBRIDE BUREAU OF STAXDARDS E. R. WEAVER
V O ~j, . NO. 7
THE CHEMICAL CONSTITUTION OF RESINOUS PHENOLIC CONDENSATION PRODUCTS-A CORRECTION In my article under the above title, “HI5 JOURNAL, 5, 5 0 6 , there is an error in the last line, page 511: “hexamethylentetramine” should read “hexamethylentetramintriphenol.” L. H. BAEKELAND.
WASHINGTOX, D. C .
I
BOOK REVIEWS
A Dictionary of Applied Chemistry. Second edition, revised THORPEand other eminent and enlarged. By SIR EDWARD contributors. To be issued in five volumes. Volume 111, 789 pages. Price of complete set when issued, $67.50. Price per volume, $13.50. Longmans, Green and Company: London and New York. This book is the third of the five volumes of the set. Volumes I and I1 were reviewed in THISJOURNAL, 4,550 and 698. Volume I11 closes with the chapter on Oils and Fats, following the usual alphabetical sequence. The same careful selection of eminent authors obtains in this as in the previous volumes, and a number of new names appear among the contributors. A comparison of the subject matter with that of the older edition shows careful revision and extension of the more important topics. A large amount of new matter has been added, for example, new chapters on Grape, Grape-seed Oil, Greases, Guaiacol, Guanidion, Gypsum, Halogen Acetic Acid, Helium, Hordenine, Hydantoin, Hydrolysis, Indigo (natural and artificial), Invertase, Iridium, Isoprene, Lacquer, Lactic Acid, Lactones, Lard, Leucine, Liquefaction of Gases, Liquors and Cordials, Meat Extracts, Mercerizing, Metallography, Monazite, Monel Metal, Neodymium, Utilization of Atmospheric Nitrogen. The book is excellently printed on a paper well adapted to reference use. The binding is strong and substantial as in previous volumes. It is hoped that the additional two volumes to complete the set will appear promptly. In this revised form the set will be a welcome addition to the working equipment of every works office, laboratory and reference library. M. C. WHITAKER
I
the mechanical engineer, chemist, as well as the practical business man whether a seller or purchaser of coal, on all subjects relating to same. Tables of analyses of coals from all parts of the United States are included. The book is particularly valuable t o the chemist as it goes into details relating to methods of coal and flue gas analysis and calorimetric determinations, giving ample details of procedure, and points out many possible causes of errors, their relative importance, and means of obviating or correcting for same. Much of this data is original and is so important that every chemist who has to do with coal analysis should consult this work. The book appears to be a little weak on a few points where the author has expressed opinions or made statements that are not in accordance with the most recent research work on the subjects without presenting any data or proof t o substantiate same. This is especially so in connection with “Sampling Coal and Fusibility of Ash.” Also in connection with calorimetric work and thermometer calibration, the author rather minimizes the work of the U. S. Bureau of Standards, while the advantage and need of referring all standardization work t o them should have been emphasized. E. G. BAILEY
Electroplating. -4 treatise on the Electro-deposition of Metals with a chapter on metal coloring and bronzing. By WILLIAM AND CECILH. HAINSWORTH. Longmans, Green R. BARCLAY & Co. pp. 399. Price, $2.10, net. This volume is probably the most up-to-date book in English that we have on this subject. The first 116pages are devoted to accessory knowledge in chemistry and electricity, which every Methods for the Analyses of Iron and Steel, Used in Labora- electroplater should know, but of which few have any undertories of tho American Rolling Mill Co., Middletown, Ohio. standing. Thus we have short chapters on fundamental principp. 62. Illustrations 7. The Republican Publishing Co., ples of chemistry, electrochemistry, electricity, primary batteries, Hamilton, Ohio. the lead storage battery, the dynamo, etc. While this infonnation is available in many other sources it is probably an advantage The preface states that this bulletin is issued on account of the numerous requests received for copies of the methods used to have it included in a book on electroplating, thus bringing in the laboratories of the American Rolling Mill Co., especially it directly to the attention of the electroplater. In the discussion of voltage calculation on pages 67 and 68 those referring to the analysis of American Ingot Iron. The methods given for the ordinary elements are those of common according to the Kelvin equation, the shortcomings of the method use in iron and stecl laboratories, and no claim is made for origi- are not mentioned, which is unfortunate. Chapters VI1 and VI11 describe the details of the plant for nality. The bulletin is intended as an aid to experienced chemists, thoroughly conversant with the standard methods for the electroplating, construction of vats, rheostats, electrical measuranalysis of iron and steel. For detail of method the reader ing instruments, cleaning, scouring, sand blast, etc. All of is referred to standard text books with the exception of the de- this is well treated and considered in a practical manner. The terminations of nitrogen, hydrogen, and oxygen in steel, which rest of the book deals with the electro-deposition of silver, are given in detail. Criticism and suggestions are invited in copper, nickel, gold, zinc, brass, iron, cobalt, tin, platinum, etc., in a very thorough way. The control of the baths is dereference to new or modifications of old methods. scribed and analytical methods given. The formulas for the WILLIAMBRADY different baths appear to have been carefully chosen. ReferCoal, Its Composition, Analysis, Utilization and Valuation. ences are given in many cases, and some of these refer to recent E. E. SOMERMEIER.167 pages. Illustrations and tables. work in this line. For example, Field’s admirable work on New York: McGraw-Hill Book Co. 1912. Price, $2.00. brass is referred to, and also Kern’s copper, nickel, and zinc baths. This book contains a very complete and readable presentation The last chapters are devoted to metal coloring and finishing. of coal testing, including sampling, analysis, calorific determina- Taken as a whole the book is excellent and should prove extions, flue gas analysis, boiler test calculations, coal washing tremely useful. S. A. TUCKER tests, etc. It is written with a view to meeting the demand of
