^43 



der bekannten oberflächlichen, sensiblen nichts zu thun bat, keinmal 

 vermißt, sie sogar mehrmals doppelt und selbst dreifach gefunden. 

 Eine Statistik gerade von anderer Seite wäre mir darum sehr erwünscht. 

 Wie der Austausch der Medianus- und Ulnarisfasern stattfindet, ver- 

 mag ich nicht zu sagen. Verwickelt ist es jedenfalls. An dem bereits 

 zweimal erwähnten Chimpansenarm fand ich hoch oben am Vorderarm 

 die auch beim Menschen bekannte Anastomose vom N. medianus zum 

 N. ulnaris sehr stark entwickelt. Die Auffaserung des vereinten 

 Nerven ergab ein reiches Geflecht. Jedoch ließ sich der Hauptteil 

 der Anastomose unschwer in den tiefen Ast des N. ulnaris verfolgen, 

 der demzufolge zu mehr als einem Drittel aus Medianusnerven bestand, 

 dabei fehlte die Anastomose am Daumenballen und durch den M. lum- 

 bricalis III hindurch. 



Nachdruck verboten. 



upon ßösE's proposed Classification of tlie Forms of Dentine. 



By Charles S. Tomes, M. A., F. R. S. 



In the September and October issues of this Journal (Bd. 14, 

 No. 1, 2 and 3) Dr. Rose has attempted to draw up a comprehensive 

 scheme of classification of the various forms of calcified tissue which 

 are met with in the vertebrata, and in so doing has criticised and 

 suggested modifications of a scheme of classification of dentines which 

 I propounded a good many years ago. 



I am not so well satisfied with my own scheme that I do not 

 desire to see it amended ; in fact I have myself pointed out that classi- 

 fication of the varieties of dentine is not altogether satisfactory, and 

 in the last edition of my Dental Anatomy (fifth edition 1898) I have 

 modified it a little. Moreover I am far too well aware of the 

 great debt which all students of odontology owe to Dr. Rose to be 

 in the least degree inclined to criticise in any captious spirit anything 

 which he may write, but on the contrary am predisposed to receive 

 it with appreciation. 



But in this paper my name occurs repeatedly, the author some- 

 times agreeing with me, and sometimes diflfering from me, and were 

 I to pass it over in silence it might appear as though the arguments 

 which it contains were convincing to me, whereas I think that I can 

 show that the evidence adduced in it is insuff'icient to justify the 

 proposed changes. 



