Chemistry and Physics. 417 



and analytical methods for the use of chemists, chemical engi- 

 neers, assay ers, metallurgists, manufacturers and students. The 

 first edition of the book which appeared in 1900 was intended 

 particularly for the nse of analysts, and while this feature is still 

 prominent with many improvements, extensive additions have 

 been made of data connected with chemical engineering, such 

 as information and tables on fuels, boilers, engines and chim- 

 neys, drying and evaporation, fire-brick and refractories, heat- 

 conductivity and resistivity, tanks, piping and pumps, belts, 

 pulleys and shafting, elevators and conveyors, and tables of the 

 heats of formation of chemical compounds. 



A great many useful numerical tables are presented. There 

 are tables relating to economic minerals, giving their composi- 

 tions, uses, physical properties and a scheme for their deter- 

 mination. There is also a scheme for the general qualitative 

 analysis of the common metals and acid radicals. Many methods 

 of technical quantitative analysis are described, dealing with 

 the examination of various ores, metals, slags, fuels, gases, 

 waters, cements, limestones, clays, oils, soaps, pigments, ferti- 

 lizers, etc., and the methods appear to be well-chosen and clearly 

 described. h. l. w. 



4. Chemical French, by Maurice L. Dolt. 8vo, pp. 398. 

 Easton, Pa., 1918 (The Chemical Publishing Co.). — This is a 

 text-book of chemical French for the use of students. It is 

 intended as an aid in overcoming the decided difficulties that are 

 encountered by those who have had but a year or two of ordinary 

 instruction in the French language, and it is so arranged that 

 it can be used by beginners in the language with the help of a 

 French grammar. 



The first part, comprising about one-half of the text, is made 

 up of graded exercises with which special vocabularies are given. 

 These exercises not only supply a very large number of technical 

 terms, but they give much interesting chemical information, so 

 that the reader will not only learn French but also much chem- 

 istry by following this course. The last part of the text is made 

 up of about a dozen important articles by eminent chemists. 

 These have been well selected, and are exceedingly important 

 and interesting. For instance, Moissan's article on fluorine is 

 given, the famous reactions of Grignarcl and of Friedel and 

 Crafts are described by their authors, and there are celebrated 

 papers by Pasteur and by Mme. Curie. The only strictly gram- 

 matical part of the book consists of a table of the irregular 

 verbs occupying 10 pages. At the end there is a convenient 

 French-English general vocabulary. 



The book appears to be a most excellent one for its purpose, 

 and its collection of famous chemical contributions makes it 

 interesting to students of chemistry who can already read 

 French. h. l. w. 



Am. Jour. Sci.— Fourth Series, Vol. XLV, No. 269.— May, 1918. 

 29 



