350 MESSRS. MURIE AND MIVART ON THE (Apr. 11, 
The gastrocnemius, which is a well-developed muscle, arises by 
two heads from the outer and inner condyles of the femur; these 
unite, as usual, to give origin to the tendo Achillis, which is broad 
(figs. 11 & 12, G.). 
The soleus arises from the head of the fibula, beneath the popli- 
teus, and is united to the tendo Achillis (fig. 12, S.). 
The plantaris is likewise a very strong muscle, arising from the 
external condyle. Its tendon passes to the inner side of the tendo 
Achillis, and then over the tuberosity of the caleaneum, being there 
separated from the last-named tendon, as are the homologous muscles 
of the hand. ‘The tendon then passes into the sole of the foot to 
form the plantar fascia, which last divides into three slips to be in- 
serted into the three toes (fig. 12, P.). 
The flewor longus digitorum is rather diminutive, and arises from 
the heads of the tibia and fibula, continuing its origin as far down as 
the popliteus—that is, to near the middle of the tibia. 
Its somewhat small tendon passes within the internal malleolus, 
and joins with that of the flexor longus hallucis about the middle of 
the foot, and although smaller than that muscle, appears to contribute 
the greater share to the formation of the perforating tendons of 
the two inner digits, these two mnscles blending together as in the 
Pig (fig. 13, FU. d.). 
The flexor longus hallucis is a much stronger muscle than the pre- 
ceding, rather beneath and external to which it takes origin, 7. e. 
from the neck of the fibula and interosseous membrane. Its broad 
and strong tendon, which, as in the Pig, is much larger than that of 
the flexor longus digitorum, passes in the groove between the os 
caleis and the inner malleolus, and thence into the middle of the foot, 
and joins the tendon of the last-named muscle, uniting with it to 
form the perforating tendons of the two inner digits, but sending a 
separate tendon to the outermost or fourth digit. (Fig. 13, F./. h.) 
The tibialis posticus is entirely wanting. 
The popliteus arises by a strong tendon from the groove on the 
outer side of the outer condyle, and is inserted into the tibia from its 
neck to almost the middle of the bone. 
The flexor brevis digitorum is of fair size, corresponding to the di- 
mensions of the foot. Origin, superficial plantar fascia, caleaneum, 
and external malleolus; while it is also attached to the deep plantar 
fascia. Anteriorly it divides into three thin and flattened tendons, 
which are very closely applied to the deep flexor tendons, and bi- 
furcate, as usual, to give passage to the latter. We could not but re- 
mark the very close correspondence between this muscle and the flexor 
brevis manus, both in appearance and attachment. (Pig. 13, F.6.d.) 
There is a small bundle of muscular fibre which arises from the 
plantar surface of the deep flexor tendon, and is inserted into the 
middle tendon of the fiexor brevis. This is, apparently, all that re- 
presents the accessorius (fig. 13, 4.). 
The lumbricales are two in number, as in the hand: one arises 
from the deep middle tendon close to the accessorius (of which it 
almost appears a continuation), and is inserted by a delicate tendon 
