PROFESSOR ALLMAN ON SCHULZE's MEMOIR. 35 



sentation promised in the first part of our paper, of the finest 

 subepithelial nerves of the cornea in the ral)bit. 



I may further be permitted to supply an omission in the 

 first part by now mentionino^ the researches of Th. W. Engel- 

 mann (35), and Lippmann (36),^ on the nerves of the cornea. 

 Engelmanu confirms the statements of Cohnheim on all im- 

 portant points ; he separates the nerves of the cornea into 

 those of the corneal tissue and those of the epithelium, and 

 questions the existence of a connection between the minute 

 nerves of the corneal tissue and the corneal corpuscles; while 

 Lippmann professes to have seen a union of the minute nerves 

 with the nucleolus of the corneal corpuscle. 



Remarks on Prof. Schulze's Memoir on Cordylophora 



LACusTRis. By Professor Allman, F.R.S. 

 (' Uber den Bau und die Entwicklung von Cordylophora 

 lacustris, Allman. Nebst Bemerkungen iiber Vorkom- 

 meu und Lebensweise dieses Thieres.') Von Dr. Franz 

 EiLHARD ScHULZE. Leipzig, 187L 



A MEMOIR with the above title has recently been published 

 by Dr. Schulze, of Rostock. The author obtained the re- 

 markable hydroid which forms the subject of it in brackish 

 water in the neighbourhood of Rostock, and he has subjected 

 it to an elaborate and exhaustive examination. He identifies 

 it, moreover, with a hydroid which under the name of Tubu- 

 laria cornea was described by Agardh as long ago as 1816, 

 in the ' Transactions' of the Royal Academy of Stockholm. 



Dr. Schulze's memoir is in many respects a confirmation 

 of my own researches on the structure of Cordyloplwra pub- 

 lished many years ago. In some points, however, it differs 

 from the account which I then gave, but which I have in 

 later publications supplemented and amended. Still, how- 

 ever, the author adduces several facts now for the first time 

 published, and though I have as yet had no opportunity of 

 verifying these, I am ready to accept most of them, as Dr. 

 Schulze's observations appear to have been made with great 

 care and by means of trustworthy methods of research. 



By the aid of osmic acid he has succeeded in killing the 

 animal before retraction was possible, and has thus retained 



1 The references indicated by these figures will be given in the concluding 

 part of our paper. 



