138 MAN AND THE LOWER ANIMALS. n 



In the Howler Monkey or Mycetes (see Fig. 17), 

 the line passes obliquely upwards and backwards, 

 and the cerebral overlap is almost nil; while in 

 the Lemurs, as in the lower mammals, the line is 

 much more inclined in the same direction, and the 

 cerebellar chamber projects considerably beyond 

 the cerebral. 



When the gravest errors respecting points so 

 easily settled as this question respecting the pos- 

 terior lobes, can be authoritatively propounded, it 

 is no wonder that matters of observation, of no 

 very complex character, but still requiring a certain 

 amount of care, should have fared worse. Any 

 one who cannot see the posterior lobe in an ape's 

 brain is not likely to give a very valuable opinion 

 respecting the posterior cornu or the hippocampus 

 minor. If a man cannot see a church, it is pre- 

 posterous to take his opinion about its altar-piece 

 or painted window — so that I do not feel bound to 

 enter upon any discussion of these points, but con- 

 tent myself with assuring the reader that the pos- 

 terior cornu and the hippocampus minor, have now 

 been seen — usually, at least as well developed as in 

 man, and often better — not only in the Chimpan- 

 zee, the Orang, and the Gibbon, but in all the gen- 

 era of the old world baboons and monkeys, and in 

 most of the new world forms, including the Mar- 

 mosets. 



In fact, all the abundant and trustworthy evi- 

 dence (consisting of the results of careful inves- 



