Chemistry and Physics. 573 



tion of tables and data for the use of public and general analysts, 

 agricultural, brewers' and works' chemists and students. It gives 

 also numerous examples of chemical calculations and concise 

 descriptions of several analytical processes. The tables appear to 

 be well selected for their purpose and carefully prepared, and the 

 book will be useful to analytical chemists. Certain data relating 

 to the imperial gallon, and statements in regard to British food 

 regulations are not applicable in this country. A few tables 

 give 7-place logarithms, which are much longer than is necessary 

 for the data to which they are to be applied. The table of fac- 

 tors for gravimetric analysis is a good one, and here mantissas of 

 only 5-places are employed. The b-jjlace logarithm table given 

 in the book is not a very convenient one, since when used as an 

 anti-logarithm table it usually gives only three figures without 

 interpolation. h. l. w. 



4. A College Text- Book on Quantitative Analysis; by H. R. 

 Moody. 8vo, pp. 165. New York, 1912 (The Macmillan Com- 

 pany). — Very elaborate directions, explanations and notes are 

 given here for a course of laboratory work. The operations 

 included are mostly of the very simplest character, and their num- 

 ber is so small that the work seems hardly worthy of the designa- 

 tion of " College text book." The gravimetric part includes only 

 the determinations of aluminium, copper, iron, chlorine and sul- 

 phuric acid in simple salts, of calcium and magnesium in dolo- 

 mite, and of silica in a silicate. " Section II, Electrolytic 

 Analysis," gives only the determinations of silver and copper. 

 Under volumetric analysis are given the preparation and stand- 

 ardization of half-normal hydrochloric acid and sodium hydrox- 

 ide, the determination of total alkali in soda ash, of chlorine with 

 silver nitrate, and of iron with permanganate. With such a 

 limited scope, it is hardly to be expected that the book will find 

 wide use outside of the author's laboratory. h. l. w. 



5. Per-acids and their Salts ; by T. Slater Price. 8vo, pp. 

 123. London, 1912 (Longmans, Green and Co.).— This is one of 

 a series of monographs on inorganic and physical chemistry 

 edited b}*- Professor Alexander Findlay. It gives a very satis- 

 factory presentation of a branch of chemistry which has been 

 very actively investigated in recent years, and it will be of great 

 assistance to teachers and advanced students who desire a fuller 

 and more modern presentation of the subject than is given 

 in ordinary text-books. The topics dealt with are, persulphates 

 and perselenates, perborates, percarbonates, pernitric and per- 

 phosphoric acids, pertitanates, perzirconates and perstannates, 

 pervanadates, percolumbates and pertantalates, perchromates, 

 permolybdates, pertungstates and peruranates. There is also a 

 very full list of references to the literature. H. L. w. 



6. Lehrbuch der Chemischen Technologie tmd Metallurgie; 

 herausgegeben von Dr. Bernhard Neumann. 8vo, pp; 891, 

 Leipzig, 1912 (Verlag von S. Hirzel). — This text-book for stu- 

 dents has been prepared by the collaboration of eminent specialists 



