ANIMAL MECHANICS. 401 



Muscular Types of Man and the Quadrumans — Hip Joint. 



Muscle. 



Man. 



Go- 

 rilla. 



Chim- 

 panzee. 



Hama- 

 dryas. 



Cyno- 

 molgus. 



Man- 

 drill. 



Rhesus. 



Ateles. 



Abductors. 



1 . Gluteus primus, . 



2. Tensor vaginae femoris, 



3. Glutaeus secundus (o\ 



4. Glutaeus secundus (f3), 



5. Glutaeus tertius, . . 



6. Glutaeus quartus, . 



7. Obturator internus, . 



Flexors. 

 r. Rectus femoris, . . 



3. Iliacus, 



Extensor s. 



1. Biceps femoris, . . 



2. Semitendinosus, . 



3. Semimembranosus, . 



5. Quadratus femoris, . 



Adductors. 



1 . Adductor primus, . . , 



2 . Adductor secundus (a) j 



3 . Adductor secundus ( /3) ' 



4. Adductor tertius, . . 



5. Adductor quartus, 



6. Adductor quintus, 



7 . Obturator externus, . 



Per 

 cent. 



18. 28 



2-33 

 10.89-I 



'•43 J 



3 52 



3. 22 



4.94 

 4.i3 



4- 251 

 4.89/ 



5- 5° 

 3.60 

 4.27 

 2.27 

 1 . 04 



16.58. 



2.39I 

 3.82 



'•35 



i, 30 



Per 

 cent. 



13.29"! 

 2. 10J 



13.98 

 '■75 

 1 . 92 



3.50 

 2. 62 



7.00 



7.86 

 5-95 

 2.45 

 6.46 

 1 .40 



9 97 

 14.33 



2. 45 

 0.87 

 2. 10 



Per 



cent. 



1 1.67 

 r 4 . 5 8 



4. '7 



2.08 



3-75 

 2.50 



11. 67 



5-84 

 4.58 

 3-33 

 5-8 3 

 1.25 



19. 18 j 



> 



2. 9 r | 

 3. 33 J 

 0. 83 

 2.50 



Per 



cent. 



9-33 



'3-°3 



1- 93 

 2.13 



5-55 

 0.98 



n.47 



17.21 

 6. 04 

 3.62 



6. 24 

 1.48 



'7-59 



0.65 



2- 75 



Per 



cent. 



5-38 

 '3.8o 

 1.93 

 '•79 



5-79 

 2.34 

 10.49 



16.56 

 4 -"97 

 3.58 

 5.65 

 0. 69 



24.14! 



0. 96 

 i.93 



Per 



cent. 



3- 72 



13-85 

 2. 06 



3 '4 



5- '5 

 1-37 



8.47 



'7-34 

 6. 24 



4- 45 

 5.32 

 '•37 



23. 00 



0.45 

 1.49 

 2.58 



Per 

 ' cent. 



6. 78 



1 1 . 60 

 r.71 



2.15 



6.i 9 

 2.48 



8.99 



I3-36 

 5-4° 

 5- '3 

 7.24 

 1.49 



1 



23-69 | 

 > 

 1 



1. 15 J 



0.71 



'•93 



Per 

 cent. 



4.96 



9-79 

 0.89 

 1.27 

 3 93 



6.49 

 3 93 

 11. 18 



8.13 

 4.70 



5-o8 



5-59 

 2. 29 



26.55 



1.78 

 3-44 





IOO 



IOO 



IOO 



IOO 



IOO 



IOO 



IOO 



IOO 



Oz. av. 



Total weights, . . 93-17 



Oz. av. 

 2-86 



Oz. av. 

 2-40 



Oz. av. 

 24-34 



Oz. av. t Oz. av. 

 7-25 17-48 



Oz. av. 

 18 12 



Oz. av. 

 7-87 



The peculiarities of the Hip joint muscles in Man are the 

 following : — 



i°. The enormous size of the GlutcBus primus, and its com- 

 plete separation from the Tensor vagina femoris; in all the 

 Quadrumana, these two muscles form a continuous thin sheet. 

 2 D 



