864 



SCIENCE. 



[N. S. Vol. XV. No. 387. 



claim originality for some of the ideas ad- 

 vanced, and while it may even be said that 

 Lis book is in several respects incomplete, he 

 lias at least given unity and connection to 

 the scattered materials at his command. More- 

 over an interval of seventeen years, vrhich has 

 elapsed between the first edition and this sec- 

 ond appearance of the work, has enabled him 

 to enrich it with many new thoughts and 

 suggestions and to add a number of beauti- 

 ful and interesting illustrations. 



Mr. von Salisch's book is unique in that it 

 presents the first comprehensive discussion of 

 forest ffisthetics. It will commend itself to 

 landscape artists, in spite of the fact that cer- 

 tain portions are technical and can be thor- 

 oughly understood only by persons who are 

 familiar with the subject of forestry. It 

 should have distinct value for the student of 

 aesthetics, especially Part I., which contains 

 many interesting suggestions regarding the 

 philosophy of beauty. But to the professional 

 forester 'Forstasthetik' should prove es- 

 pecially valuable and interesting because it 

 throws a fiood of light upon the broad pos- 

 sibilities of his profession. As our country 

 is devoting more and more attention to con- 

 servative forestry, he naturally asks how his 

 work will affect the natural beauty of oui 

 landscapes. 'Forstasthetik' shows him how 

 the beauty of a forest may be brought out to 

 special advantage by a forester of taste with- 

 out affecting its usefulness, and is thus ■ cal- 

 culated to give him a clearer insight into the 

 scope and dignity of his profession. 



G. Frederick Schwakz. 



Bureau of Forestry. 



Elementary Zoology. By Vernon L. Kellogg. 



New York, Henry Holt and Company. 



1901. Pp. XV + 492. 



Kellogg's 'Elementary Zoology' is planned 

 to meet the requirements of a laboratory 

 guide and of a reading test in introductory 

 zoology. The book is divided into three 

 parts: the first dealing with the structure, 

 functions, and development of animals, the 

 second with systematic zoology, and the third 

 with animal ecology. The text proper is fol- 

 lowed by appendices en the needs of the 



pupil, the equipment of the laboratory, and 

 the rearing of animals and the making of 

 collections. The volume is concluded by a 

 good index to subjects and illustrations. 



Judged from the standpoint of a laboratory 

 guide the book gives a wide selection of types, 

 and these are dealt with in an unusually 

 satisfactory way for an elementary treatise, the 

 descriptions being neither too exhaustive nor 

 too superficial. Everywhere, however, too much 

 information is given the student. Why ask 

 if the alimentary canal of the toad (p. 8) is 

 uniform in character, and in the same para- 

 graph describe the stomach as an enlarge- 

 ment, the small intestine as slender, and the 

 large intestine as larger than the small in- 

 testine? With figures and with descriptions 

 of this kind the book is bound to sap most 

 of the life from the laboratory work. A good 

 laboratory guide should be built upon leading 

 questions, which incidentally include a good 

 terminology, and it should be in the main 

 without illustrations. It follows from this 

 that a book designed to be of an informational 

 character and also a laboratory guide is bound 

 to be somewhat of a failure in one direction 

 or the other. 



From the standpoint of an elementary read- 

 ing text much can be said in favor of the 

 volume. It is written with unusual accuracy 

 and the small errors so commonly met with 

 in elementary works of this kind are here 

 noticeably absent. The defects are chiefly 

 omissions. It seems hardly fair to use the 

 title zoology for a book that nowhere contains 

 even a brief exposition of the animal body 

 as a working machine, and that from cover 

 to cover makes no mention of the host of 

 animal forms known only as fossils. Of 

 course, the chief task of the author was to 

 omit, but it seems scarcely wise to carry this 

 to the point of excluding the fundamental 

 results of animal physiology and of paleo- 

 zoology. 



As a piece of book-making the volmne is 

 serviceable. The search for novel illustrations 

 has often led to the use of poor photographs 

 where good drawings would have been much 

 better. It is questionable whether the pupil 

 will gain much from such a figure as that of 



