135 



The 64 plexuses in which seven spinal nerves contributed to the nerves of 

 the limb were distributed as follows: 



^egro 4^ \ female 20, right side 12, left 8. 

 White 17, male 17, right side 11, left 6. 



They constituted: 



23 o/o of the total number of plexuses (74) from white subjects. 



(172) „ negro 

 (172) „ male „ 



(74) „ female „ 

 (127) „ the right side. 

 (119) „ „ left „ 



The 163 plexuses in which eight spinal nerves contributed to the nerves of 

 the limb were distributed as follows: 



Nporn 112 ^ ™'^^^ ^3' ^^S^* ^^^^^ ^5, left 38. 

 iNegro 11^ ^female 39, right side 19, left 20. 



WhitP ^^ f ^^^® '^^' "n^* ^^^^^ 1^^'' ^^^^ -1- 

 vvnite 01 ^fenjale 11, right side 6, left 5. 



They constituted: 



68,8 o/o of the total number of plexuses (74) from white subjects. 



64.5 0/0 „ „ „ „ „ „ (172) „ negro 



65.6 0/0 „ 

 67,6 0/0 „ 

 62,2 0/0 „ 

 70 o/o „ 



The 13 plexuses in which nine spinal nerves contributed to the nerves of 

 the limb were distributed as follows : 



fsegro W ifeniale 3, right side 2, left 1. 

 White 3, male 3, right side 2, left 1. 

 They constituted: 



4 o/o of the total number of plexuses (74) from white subjects. 



5,8 0/0 

 5,8 o/o 



4 o/o 

 5,5 o/o 



5 o/o 



(172) 

 (172) 

 (74) 

 (127) 

 (119) 



negro „ 

 male „ 



female „ 

 the right side. 

 „ left 



(Schluß folgt.) 



Nachdruck verboten. 



Zur Entwickelimgsgeschichte des Schädels einiger Tag- 



raubYÖgel. 



Vorläufige Mitteilung von M. Chomjakoff, Assistent 

 am Cabinet der vergl. Anatomie der Kaiserl. Universität in Moskau. 



Mit 3 Abbildungen. 



Während meiner ornithologischen Excursionen in Central-Rußland 

 (in den Jahren 1897 — 1900) habe ich Gelegenheit gehabt, ei^e gute 

 Serie — ca. 30 Exemplare — der Embryonen und Nestjungen des kleinen 



