Literary Notices. xxxix 



little wonder therefore that views so formed and so expressed have great 

 weight with his compeers. 



It will be impossible in the space at our disposal to recapitulate the 

 abundant material offered by this paper. Edinger corrects the mistake 

 made in earlier papers of failing to distinguish olfactory centres of the 

 first and second orders, or (to use his own nomenclature) Riechfeld 2S\.^ 

 Anwwnsrinde. This whole subject has been elaborately discussed by El- 

 liot-Smith, Meyer and the writer. About ninety series from a wide range 

 of groups were employed by Dr. Edinger in his study and the variety of 

 methods was adequate to insure mutual supplementation. The nomen- 

 clature used is modeled on that of the recent report of the German No- 

 menclature Commission. Tracts are named as far as possible by com- 

 pounding their termini. Instead of using the word lobe to apply to cere- 

 bral regions Edinger seeks to avoid misleading analogies by such terms 

 as "cortex medio-dorsalis." Although the olfactory fossa is mentioned, 

 we miss any reference to the Jacobson's organ fibres. In the basal lobe 

 three parts are distinguished as striatum, mesostriatum, and epistriatum, 

 terms, however, which may be open to the charge of suggesting pre- 

 mature homologies. 



In the discussion of the histology of the cortex the results are 

 similar to those of Cajal. The anterior mantle commissure is no longer 

 as formerly homologized with the callosum but with psalterium fibres 

 as a ^^ commisuira pallii anterior." We regret that the ambiguous terms 

 anterior and posterior should be given greater currency. It is to be 

 noted that in some groups the anterior commissure contains mantle 

 fibres so that the ambiguity is doubled. 



The following tracts are identified with the olfactory apparatus : 

 The radiatio olfadoria. This is the radix lateralis of other writers. To 

 this term the author objects on the ground that it suggests a homology 

 with the roots of cranial nerves. The criticism is well-founded but we 

 are surprised to see the discovery of the true relations attributed to Cajal. 

 We had supposed that the origin of the radix fibres in the cells of the 

 bulb had long been recognized. Certain it is that a good hematoxylin 

 stain reveals this relation as well as the Golgi impregnation. We have 

 thus demonstrated it in the Amphibia. On the next page the same 

 tract seems to be formally named tractiis bulbo-corticales, though a part 

 of the fibres end in the cortex of the lobus olfactorius and part in the 

 corpus epistriatum. Thus does each part rejoice in, not one, but often 

 two new names from the same source — thanks to the efforts of the Ger- 

 man Nomenclature Commission. The pero of Wilder, which the au- 

 thor has hitherto professed himself unable to differentiate, appears as 



