Proceedings of the Association of American Anatomists 



V 



reproduced in the three brains. Principal among these are : the un- 

 usual form of the paroccipital fissure, confluent with the occipital by 

 the cephalic stipe, separated from the parietal fissure by a slightly sub- 

 merged paroccipital isthmus, and character i7,ed in each case by an oper- 

 culation such as the writer had never before seen in quite the same form 

 in any other brain among 200 examined carefully for just this point. 

 Striking similarities also occur elsewhere, as in the separation of the 

 paracentral from the supercallosal, in the form of the postcentral, of the 

 supercentrals and superfrontals, compared according to sides and many 

 other features. 



A NOTE ON THE TRUE WEIGHT OP THE HUMAN LUNGS. By Edw. 

 Anthony Spitzka. Columbia University, New York City. 



In six criminals executed by electricity, the weight of the hmgs was 

 found to be much below the averages generally given in the text-books. 

 The difi^erences due to two peculiar conditions attending this mode of 

 death, namely, non-coagulation of the blood and contraction of the 

 vessel walls. With this the sudden closure of the glottis, the contraction 

 of the thoracic cavity, and other phenomena all help to bring about a 

 nearly bloodless condition of the lungs, so that we are enabled to ascer- 

 tain the actual weight of lung tissue only, not, as in ordinary death, of 

 a variable amount of blood and serum as well. 



The table follows : 



Grams. 



Age. 



Czolgosz 29 



Turckofski 41 



W. V. W 27 



B. V. W 23 



Gamari 31 



Ennis 30 



Ounces 



The weight of the lungs themselves then more nearly approximate 

 7 and 8 ounces respectively than 20 and 22 ounces as usually given. 



THE BIMERIC DISTRIBUTION OF THE SPINAL NERVES IN ELASMO- 

 BRANCHII AND URODELA. By Charles R. Bardeen. The Johns 

 Hopkins University, Baltimore. 



In those vertebrates in which a definite metameric segmentation is 

 maintained in the body-wall, as in the Elasmobranchii and Urodela, the 

 cutaneous nerves of the trunk and tail reach the skin through the myo- 

 septa. Each is distributed anteriorly and posteriorly to the myoseptum 

 through which it passes. In Urodela and Elasmobranchii, in those 



