SOME NEURAL TERMS. 157 



Klingenden," could hardly have been more sweeping had I pro- 

 posed to replace Latin by Choctaw. Any anatomist, unpreju- 

 diced and not above conceding the possibility that some good 

 thing may come out of the American Nazareth, who will can- 

 didly compare the terms in Table VI (Part VII) will admit that 

 in the second column a comparatively small number are new in 

 the strict sense of the word, and that the large majority are 

 either identical with those in the first, or differ therefrom merely 

 in the omission of useless words, or in the replacement of 

 adjectives by prefixes of like signification. 1 



Among the special terms to which objection is expressed by 

 Professor Kolliker are aula 2C&& proton, and they are here briefly 

 defended. 



Aula. After years of confusion, doubt, and even distress 

 of mind, induced by the failure to reconcile the facts of devel- 

 opment and comparative anatomy with the prevalent nomencla- 

 ture of the brain in 1880 ('80d, e, f; '81b, a), I proposed aula 

 upon grounds formulated two years later as follows (W. and 

 G., '82, 1065): 



(1) To substitute brief single words for the phrases "ventriculus 

 communis," "ventriculus lobi communis," mesal part of the "common 

 ventricular cavity," "foramen Monroi," etc. 



(2) Because the phrase most commonly employed, foramen Monroi, 

 is used to designate at least three different cavities or orifices : (a) 

 the cavity by which either paracoelia [" lateral ventricle "] commu- 

 nicates with the mesal series of cavities ; (fr) the two lateral orifices 

 together with the intervening space ; (V) the mesal [cephalic] orifice 

 of the diacoelia. We have been unable to ascertain by whom the 

 phrase was first employed, and the description by Munro secundus 

 (1783), in whose honor it was applied, is somewhat vague. 



(3) In order to indicate our opinion of the desirability of recogniz- 

 ing the aula as morphologically an important element of the series of 

 encephalic cavities. 2 



1 At that time, although my principal article on terminology had not been read 

 by Professor His (see Part VI), the lists of terms preferred by me were in his 

 hands, so that no claim can be entertained that he referred merely to what he 

 assumed my proposals " tended " to bring about. 



2 With some of the lower vertebrates (e.g., Chimaera, *77a), the aula is much 

 more extensive than either of the " lateral ventricles " with which it is connected 

 through the two portae. 



