458 



SCIENCE 



[N. S. Vol. XXXI. No. 795 



mand for and interest in the information re- 

 garding the different groups, and to their 

 biological significance, many users of Dr. 

 Doflein's book will doubtless agree with the 

 reviewer that the non-pathogenic groups are 

 all too inadequately represented. The Ciliata 

 are especially unfortunate in coming up last 

 for presentation in a volume rapidly ap- 

 proaching a thousand pages. One feels that 

 the extensive and important recent work on 

 the Eadiolaria is very incompletely presented 

 in the 18 pages mostly consisting of a per- 

 functory list of radiolarian families. In fact 

 a new edition of Biitschli's Thierreich mono- 

 graph is sorely needed to make possible a well- 

 coordinated critical review of the whole group 

 of Protozoa and this is a task which in the 

 present state of the science can only be under- 

 taken by a group of specialists. All protozo- 

 ologists, biologists and pathologists will be 

 profoundly grateful to the author for the 

 book even with these minor limitations. It 

 will also prove a stimulus to further research 

 and greatly facilitate it. Problems requiring 

 further elucidation are continually suggested 

 in its pages. 



The book is, beyond all question, the best 

 illustrated work that has come from Fischer's 

 famous press. This is due to the wise selec- 

 tion of figures, the inclusion of many original 

 sketches made especially for the work, and to 

 the uniformly careful preparation of the 

 drawings, as well as to the high degree of 

 technical skill in the reproduction. The only 

 drawback is the reflection from the highly 

 glazed paper which is very trying to the eyes. 



An English translation of the work, revised 

 to date, is in preparation by Col. Leslie in 

 conjunction with Dr. Doflein. This will be es- 

 pecially welcome to English readers, since it 

 makes the work available for instruction in 

 academic and medical classes. 



The book is fittingly dedicated to " meinem 

 lieben Lehrer und Freund Richard Hertwig 

 in Verehrung und Dankbarkeit," and comes 

 logically from the laboratories at Munich, the 

 foremost center in the world for protozoolog- 

 ical research along comprehensive lines. 



Charles A. Kofoid 

 Univeesitt of Califobkia 



Allen's Commercial Organic Analysis. Vol- 

 ume I. Introduction, Alcohols, Teast, Malt 

 Liquors and Malt, "Wines and Spirits, Neu- 

 tral Alcoholic Derivatives, Sugars, Starch 

 and its Isomerides, Paper and Paper-making 

 Materials, Vegetable Acids. By Henry 

 Leffmann and W. A. Davis, editors, and E. 

 F. Armstrong, J. L. Baker, G. C. Jones, E. 

 ScHLiCHTiNG and R. W. Sindall, contribu- 

 tors. Fourth edition, entirely rewritten. 

 Philadelphia, P. Blakiston's Son and Co. 

 1909. Pp. X 4- 576. Price $5.00. 

 It is eleven years since the last American 

 edition of this well-known work was published. 

 When we consider the very rapid advances 

 which have been made in this field during 

 recent years and also that the third edition 

 was prepared so hastily as to prevent a thor- 

 ough revision, the need of a thorough rewrit- 

 ing of the whole book is evident. The re- 

 vision has been very thorough and a large 

 amount of new material has been added. 



No one individual can be thoroughly fa- 

 miliar by personal experience with the great 

 variety of analytical methods presented in a 

 book of this kind and the editors have very 

 wisely secured the help of several expert chem- 

 ists for the preparation of difl^erent sections 

 of the book. The introduction (83 pages) 

 treating of general methods of analysis and 

 the determination of physical constants is by 

 William A. Davis; Methyl and Ethyl Alcohol 

 (4Y pages), by G. C. Jones; Malt and Malt 

 Liquors (32 pages), by Julian L. Baker; 

 Wines and Potable Spirits (39 pages), by G. 

 C. Jones; Teast (21 pages, wholly new), by E. 

 Schlichting; Neutral Alcoholic Derivatives, as 

 Ether, Esters, Aldehydes, Chloroform, etc. (57 

 pages), by Henry Leffmann; Sugars, Analy- 

 sis of Urine, Starch, Dextrin, Flour, Bread, 

 Cellulose, etc. (180 pages), by E. Frankland 

 Armstrong; Paper and Paper-making Mate- 

 rials (20 pages, new), by E. W. Sindall and 

 Acid Derivatives of Alcohols, as acetic acid, 

 vinegar, oxalic, succinic, malic, tartaric and 

 citric acids (83 pages), by Henry Leffmann. 

 The book is one which should be in every 

 chemical library and which no chemist en- 

 gaged in the examination of foods can afford 

 to be without. W. A. Notes 



