TJie Mid- Winter Meetings. Gj 



hands of anatomists, were similarly reproduced in the three brains. 

 Illustrations were given. 



The Bimcric Distribution of the Spinal Metres in ElasmobnincJiii 

 and Urode/a, by Charles K. Bardeen. In those vertebrates in which 

 a definite metameric segmentation is maintained in the body wall, 

 both the cutaneous and the motor nerves of each segment reach their 

 distribution through the myoseptum and supply structures both 

 cephalad and caudad to their septum. Occasionally a single motor 

 nerve fiber may be seen dividing and sending one branch to the 

 myotom anterior to the septum and the other to the myotom posterior. 

 Attention is called to the difliculty of reconciling these facts with a 

 strict adherence to an extreme form of the neuro-muscular theory such 

 as is maintained by some morphologists. 



A Deseription of the Gross Anatomy of tJie Adult Hutnaii Brain, by 

 Bern Budd Gallaudet. The description was confined to the thal- 

 mus and was based on forty adult brains. 



On the program of the Eastern Branch of the American 

 Society of Zoologists, meeting at Philadelphia, the following 

 titles, among others, were announced : 



The PJiysiology of the Lateral Line Organs in Fishes, by G. H. 

 Parker. To appear in abstract in this Journal and in full in the 

 Bulletin of the U. S. Fish Commission. 



A Fair of Giant Nerve Cells of the Squid, by Leonard W. Wil- 

 liams. 



The JVerz'ous System of Latnellibranchs, by Gilman A. Drew. 



Tiie Origin and Function of t/ie Medullary Sheaths of Nerve Fibers, 

 by Porter E. Sargent. To appear in full in this fournal. 



The Relation of the Size of Nerve Elements and Their Constituent 

 Farts to Structural and Functional Conditions, by Porter E. Sargent. 



At the Philadelphia meeting of the American Physiological 

 Society the following papers, of special interest to neurologists, 

 were read : 



The Survival of Lrritability in Manunalian Nerves after Removal 

 from the Body, by W. D. Cutter and P. K. Gilman. Making use 

 of the fact noted by other observers that the mammalian nerve re- 

 tains its irritability for some time after removal from the body, the 

 authors attempted to determine the duration of this survival, the vari- 

 ations in irritability during the period of survival, and, lastly, the 

 effect of prolonged anaesthesia upon the phenomenon. Irritability 

 was determined by measuring the action current of the nerve when 



