469 



Table IIT. — Physieal data. Macacus (female). 

 {a) Body and Viscera. 



Grains. 



1. Body, 41,700 



2. Kidneys, 385 



3. Liver, 1650 



Grains. 



4. Heart, 418 



5. Brain, 1210 



6. Intestines, stomach, and spleen, 1584 



{h) Mmcidar System. 



Grains. 



1. Adductores femoris, 462 



(triceps, adductor, and pectinseus.) 



2. Gracilis and sartorius, 110 



(These two muscles are united at their point of attach- 

 ment to the tubercle of the tibia, and the gracilis 

 arises from the whole length of the symphysis pubis.) 



3. Psoas and iliacus, 281 



4. Glutsei, and small rotators, 451 



5. Flexors of knee: — 



Biceps femoris, 396 



Semimembranosus and semitendinosus, , . 231 



6. Extensors of knee : — 



Quadriceps and tensor vaginae, 605 



IN". E'. — The trachelo- acromius (l^o. 16 of last) is attached to the 

 anterior third of the spine of the scapula, on its inner edge below the 

 trapezius, and to the anterior fourth of the clavicle. 



The accessory slip (I^To. 12 of last) passes from the semicircular 

 ridge to a fibrous band running along the anterior half of the vertebral 

 edge of the scapula. There is no distinct levator anguli scapulce ; it forms 

 part of the serratus magnus. 



Combining these muscles into the same four groups as before, we 



find- 

 Grains. Per Cent. 



1. Posterior muscles of hip joint, 451 18*98 



2. Anterior muscles of hip joint, 693 29 '16 



3. Extensors of knee joint, 605 25*46 



4. Flexors of knee joint, 627 26*40 



2376 100-00 



The distribution of the muscles is here very similar to that found in 

 the Cercopithecus, and verj^ differen t from that of man. In both cases the 

 prominent point of difi'erence is the feebleness of the flexor muscles of 

 the knee joint in man. 



The insertion of the trachelo-acromius (^16) into both clavicle and 

 scapula, and not into the scapula only, would seem to be characteristic 

 of the Macacus, as distinguished from the Cercopithecus. 



I shall add, for the purpose of comparison with the foregoing, the 

 weights of the muscles of a male Cercopithecus and Macacus. 



* These muscles are numbered as in Table 11. 



