No 440.] 



NOTES AND LITE 



two terms (ecology and biology (pp. 4 and 57). which, though 

 synonyms in German, are far from equivalents in English. The 

 choice of the form for proper names, if not of great importance, 

 would lead in English rather to Vesalius than Vesal (p. 12), a matter 

 in which the reader is given his choice with Galen and Galenius (p. 

 12). In discussing animal temperature poikilothermous, idiothermous 

 and homoiothermous are used without good reason, so far as we know, 

 for the more usual pcecilothermal, idiothermal, and homothermal. 

 The fact that the volume in its several editions has passed from one 

 century to another has led to some confusion which should have 

 been cleared up in editing; thus while we are correctly told (p. T7) 

 that the cell theory is of the "last century" and that the name Pro- 



of Species'" is described (p. 24) as a "scientific work of this century." 

 The proofreading has been unusually close; on page 13, line 28, 

 unbiassed is preceded by a useless dash and on page 435 Cumbarus 

 stands for Cambarus. The presswork and illustrations are as a rule 

 good, though many of the newly introduced, original figures, particu- 

 larly the half-tones, are too faintly printed. The defects that have 

 been pointed out are insignificant compared with the good qualities 

 of the volume, which deserves immediate acceptance as the best 

 general text-book of zoology for the majority of American colleges. 



The Neurone Theory and its Adherents. 1 — Since the promul- 

 gation of the doctrine of the neurone by Waldeyer in 189 1 numerous 



the more noted workers in neurology. These expressions of opinion 



been the means of introducing at most only slight modifications of 

 the general doctrine. Up to the present no single considerable pub- 

 lication has been devoted to a thorough review of the body of evidence 

 brought forward by the neuronists and to a radical and well directed 



The first chapter of this work takes up briefly Waldeyer 's original 

 conception of the neurone and the modifications that during the last 



the neurone theory are Xissl makes one of the clearest and most 



