294 THE DOCTRINE OF DESCENT. 
connected with the inaptitude of man, and as a criterion 
of consanguinity, can hardly be taken into consideration. 
While requiring by logical deduction, a common origin 
for man and the anthropomorphous apes, the doctrine of 
Descent, as it is almost superfluous to say, repudiates the 
senseless demand for intermediate forms between man 
and the gorilla. What future times may perhaps dis- 
cover, are intermediate forms which go back to the com- 
mon point of derivation of the present apes and of man. 
And thus, notwithstanding theveryclose relations already 
discussed, there remains the chasm which is approxi- 
mately expressed by the comparative weights of the 
lowest human brain yet measured and the brain of the 
gorilla, The brain of a bushwoman, normally efficient 
after the manner of her tribe, amounted to 2 lbs. 4 ozs, 
(Cuvier’s brain weighed 4lbs. 40zs.), that of a gorilla 
may be estimated, from the capacity of the cranium, 
at about 1lb. 60zs, which gives the approximate 
ratio of 3:2. But exalted above the animal as man 
may feel himself in his bodily nature, in this again he 
forms no exception, as many animal forms occupy an 
equally isolated position with reference to their unmis- 
takably nearest kindred. 
- Need we imagine a twofold creation of vertebrate 
animals, because the lancelet is now separated from the 
fishes by a whole scale of intermediate forms no longer 
extant? The example of the horse is, among others, 
highly instructive in this case. Let us bear in mind that, 
in the nature of the limbs and teeth, this genus differs 
far more from all other extant graminivora than man 
differs from the ape. Had not the fossil ungulates been 
found which demonstrate the common origin of the horse 
