202 LECTURE VII. 



feet — but we have not asserted that tlie microceplialus is 

 actually an ape ; only thatj if these few characters which mani- 

 fest the human type were wanting, nothing would remain to 

 distinguish the idiot from the ape. When then Wagner 

 from these few characters infers " that the human type is 

 manifested in all corporeal organs of microcephali/^ he is 

 " running a-muck" against scientifically demonstrated facts. 

 There is here undoubtedly a mixture of human and simious cha- 

 racter, the latter being produced by an arrested development of 

 the foetus in utero, forming thus an intermediate stage between 

 ape and man, produced by the progress of the laws of the 

 development of human genus. If now it be possible that man 

 by arrest of development may approximate the ape, the for- 

 mative law must be the same for both ; and so we cannot deny 

 the possibility that just as man may by arrest of development 

 sink down to the ape, so may the ape by a progressive de- 

 velopment approximate to man. 



