Liter my Notices. xxvii 



eral buds. The middle one behaves like the mammalian hypophysis, 

 while the lateral ones are temporarily united with the median one and 

 then acquire an independent relation with the brain, separating from 

 the hypophysis in the form of solid epithelial bodies. 



The figures show that in Lacerta agilis there is a well-developed 

 " Seessel's recess 1 " which corresponds to the structure described by 

 Mr. Bawden in the June number of this Journal for 1893. 



Changes in Brain Tissue Due to Hardening Reagents. 2 



It is a matter of the first importance to the histologist to be able 

 to distinguish those appearances due to the reagents employed from 

 those which express the normal state of the tissue and among these in 

 turn to distinguish those which arise from functional changes. 



The investigations conducted by Dr. Donaldson have been under 

 most favorable auspices and have been facilitated by grants of money, 

 abundant material, and competent assistance, etc.; we naturally ex- 

 pect, therefore, very considerable results in this tedious but valuable 

 investigation. This preliminary paper, however, is limited to the 

 effects upon the weight of entire brains or large portions of such brains 

 by a few of the common reagents. It thus gives an accurate math- 

 ematical statement of the changes with which all histologists have 

 become more or less familiar in practice. We look forward with in- 

 terest to the application of similar methods to the more important 

 questions of histological alterations. 



It is impossible to reproduce the tables which show at a glance 

 the change of weight resulting by varying the time or density of the 

 fluid. They will be of considerable value in the laboratory. 



The Auditory Nerve-termini in the Brain of the Cat. 3 



Dr. Paul Martin contributes several particulars to the recent re- 

 searches of Sala, Held and Kolliker, on this subject. We excerpt 

 his summary : 



1. The fibres of the cochlear nerve divide, soon after their en- 

 trance into the ventral nidulus, into a division passing medio-cephalad 



x Zur Entwickelungsgeschichte des Vorderdarms. Arch. f. Anat. u. Phys., 

 1S77. 



2 Donaldson, H. H. Preliminary Observations on Some Changes Caused 

 in the Nervous Tissues by Reagents Commonly Employed to Harden Them. 

 Journ. Morphology, IX, 1. 



3 Anat. Anzeiger, IX, 5-6. 



