Literary Notices. xxvii 



of the rhinencephalic loop, but its fibres are restricted to the hippo- 

 campal fold. We trust a complete monograph may soon be pub- 

 lished. 



Goltz and the Cerebral Hemispheres. 



Professor Goltz still continues his experiments upon the brain of 

 the dog and has succeeded in removing the entire cerebrum without 

 destroying the vital functions, one animal living about i8 months after 

 complete extirpation. The animal was demented and devoid of mem- 

 ory, intelligence and reflection, but far from being an insensible reflex 

 mechanism. He could be awakened from sleep by tactile irritation. 

 Hearing was preserved to some extent. He closed his eyes at a sud- 

 den flash of light. Taste was present, but smell seemed completely 

 destroyed. 



He resisted removal from his cage, growling and barking and 

 even attempting to bite, as if normal. When left to himself he kept 

 up a continuous circuit and, though he frequently slipped, he recov- 

 ered without assistance and did not step on the dorsum of the foot. 

 Any attempt to move his legs aroused symptoms of displeasare. The 

 decerebrated dog is neither paralyzed nor affected with anaesthesia. 

 Many of the symptoms immediately following extirpation are supposed 

 to be due to inhibitory excitements due to the operative shock or sub- 

 sequent irritation. The results are startling and serve to open ques- 

 tions which were supposed to have been permanently settled. It will 

 be seen that the cases now reported present great if not insuperable 

 difficulties to the theories proposed by Munk. 



Application of Golgi Process to Worms. 



We copy from "Science" the details of the process by which M. 

 von Lenhossek demonstrates the existence of nerve cells in the skin 

 of the earthworm. Pieces of an earthworm each three quarters of a 

 millimeter long are placed for three to five days in about ten cubic 

 cencimeters of the following mixture : bichromate of potash 3.5 per 

 cent, four parts; osmic acid, one per cent, one part. The pieces are 

 dried on filter paper and placed in .75 per cent nitrate of silver to 

 every 200 cubic centimeters of which a drop of formic acid is added. 

 The pieces are then hardened rapidly in absolute alcohol and sectioned 

 in elder pith, after which they are mounted without cover glass in 

 benzole balsam. It may be added that the facts published by Len- 

 hossek may also be made out by over-staining with hematoxylin and, 

 in fact, were seen in such preparations by Mr. Turner, of Cincinnati, 

 beforfe the publication of the former's paper. 



