INTERNAL STRUCTURE. THE BRAIN. 165 



MERRING has furnished us with another point of compari- 

 son, viz. that of the ratio, which the mass of the hrain 

 bears to the bulk of the nerves arising from it. Let us 

 divide the brain into two parts ; that which is immediately 

 connected with the sensorial extremities of the nerves, which 

 receives their impressions, and is therefore devoted to those 

 common wants and purposes which we partake with animals. 



Orangs. 



Cliimpans^, of 26 inches in height, lloz. Idr. Tyson. — A 

 proportion equal to the humane 



Gibbon (S, Lar), v?. 

 Sapajous, or American monkeys with prehensile tails. 



Saimiri (S. sciurea), ^j Sai" (S. capuclna), ^V *? Ouistiti 

 (S. jacchus), -jig^. 



Coaita (S. paniscus), V-r* 

 Ajies —Mulhvouc (S. faunus), Vt? Callitrlche (S. saboea) and 



Patas (S. rubra), Vt ? (§• mona,) V^ j Mangabey (S. fullgi- 



nosa), -5?^. 

 Baboons. — Macat]ue(S. cynomolgus),-gV? Magot (S.sylvanus), T-ir 



Great Baboon (S. sphynx), txtt' 

 Lemurs. — Mococo (L. catta), -fy\-j Vari (L. macaco), V^. 



Bat (V. noctula), -g^V j Mole, -^V *? Bear, -r^^ j Hedgehog, -ri-^. 



Fox, -j-^3- \ Wolf, -tV-o- ? Martin, -s-f^: Ferret, -r." g* 



Beaver, T-rhr ? Hare, -^^ j Rabbit, -^^ — xr^ ? Water-rat, -ra-V? 



Rat, yV ? Mouse, Vy *? Field-mouse, -^V* 



Wild Boar, -g-yT ? Domestic, ^4-T5-—:rfT ? Elephant, ^^t,^— 7 or 

 10 lb. 



Stag, ^^^i Roebuck, (young), ^V ? Sheep, -^l-p, -riir> Ox, 



Calf, -^-f^ ; Horse, y^-^, ^^-^ ; Ass, xK- 



Dolphin (delphlnus delphis,) ^V> Vir> 15V, t^t ? Porpoise, (D. 

 phoctena), -j'.^* 

 Birds. — Eagle, -^^(,; Falcon, t-^^j Goose,^„j (HALrER)j Duck, 

 ^ -rhr'y Cock, ^V? Blackbird, ^v ? Redbreast, V,^ j Chaffinch, Vy 5 



a Fringilla, carefully weighed and examined by Haller, -^ j 



Sparrow, ^V ? Canary-bird, -rV 

 Reptiles. — Turtle, ^g^- j Tortoise, -2'ftr ? Coluber-natrix, y^^ 5 



Frog, x7^. 

 Ztj/if^. — Shark, ^VjT^j ? Dog-fish, j 5'^^ j Pike, t/ot J Carp, ^ ■^. 



