2102 Journal of Applied Microscopy 



from the profusion of all sorts which the author gives, one could make a very 

 good laboratory course in elementary physiology. 



The text proper is, as is usually the case in works of this sort, in large part 

 a compilation from various standard authorities. The first three chapters, 

 which are entitled respectively " Introduction," " Microscopic Structure of the 

 Human Body," and " Anatomical Elements," are distinctly far below the 

 remainder of the book in character. These introductory chapters abound in 

 very curious and surprising, and in some cases absolutely incorrect, statements. 

 We are told, for example, on page 39, that all parts of the body other than the 

 cell are " mere skeletal structures." On the same page, in a footnote, is given 

 an account in brief of the development of the frog's egg, illustrated by a series 

 of figures on page 43. Anyone familiar with the development of this egg will 

 find this account, and especially the figures (which are original with the author), 

 truly wonderful. The remainder of the text is very much better than these first 

 three chapters. It contains considerably more useful information than the usual 

 high school text. The style throughout is rather diffuse, and the accounts could 

 have been made much clearer and more comprehensible for a young student if 

 most of the unnecessary detail had been omitted. An appendix, devoted 

 mostly to practical hints to the teacher, and a glossary of technical terms are 

 included. The illustrations are numerous and, considering the price of the 

 book, as well done as could be expected. The book forms, on the whole, an 

 excellent, suggestive hand-book for the intelligent teacher of physiology, and 

 therein appears to the reviewer to lie its chief value. R. p. 



Jennings, H. S., and Jamieson, C. Studies on Experiments were performed with cut 

 Reactions to Stimuli in Unicellular Organ- "^ ^ . 



isms. X. The Movements and Reactions pieces of the body of specimens of 

 of Pieces of Ciliate Infusoria. Biol. Bull. Styloukhia, Oxytrkha, Stentor cmruleus, 

 3: 225-234, 1902. 



Sptrostomtim and Paramecium^ for the 



purpose of determining how separated parts of the body would react to stimuli. 

 " The operation of cutting the animals was done with a small knife, under the 

 Braus-Driiner stereoscopic binocular, which has great advantages for such work. 

 It was found best to cut the animals when resting against a clean glass surface. 

 Most of the operations can be performed by the aid of some patience without 

 great difficulty." The movements and reactions of pieces of the body in all the 

 species studied were found to be essentially similar to those of the entire 

 animals, in case the pieces were not too minute or too irregular in form. The 

 pieces in swimming describe a spiral path, just as do the whole organisms. 

 Pieces forming from one-fourth to one-half the entire animal, whether taken from 

 the anterior or posterior end, or from the right or left side, or from the middle 

 of the body, react to chemical and mechanical stimuli by backing and turning 

 towards the same structurally defined side, in the way typical for the entire 

 organism. R. P. 



Aschoff, L. Ehrlich's Seitenkettentheorie und This clear and comprehensive exposi- 

 ihre Anwendung auf die kiinstHchen Immn- . . „, ,. , , ,, -j • • ,, .. 



nisierungsprozeL. Zusammenfassen de tion of Ehrhch's " Side-cham theory 



Darstellung. Sammelreferat in Zeitschr. f. of the action of tOxins and antitoxins 

 Alleem. Phvsiol. Bd. i, Heft. -•. and 4, pp. -n i. r j r 1 u u- 1 • * 



(Referate) 69-248. Taf. 7, 1902. ^ill be found very useful by biologists 



and physiologists. All the recent liter- 

 ature on the subject of immunity is carefully summarized, and the reviewer is to 

 be congratulated on having succeeded so well in making this decidedly involved 

 subject comprehensible to the general biological reader. An idea of the 

 thoroughness of the work may be gained from the fact that the bibliography alone 

 occupies forty-one closely printed pages. R. p. 



