60 PROCEEDINGS OP THE ACADEMY OF [18T9. 



olet's criticism, j^et they observe in their " Note sur l'encephale 

 de l'Orang," in the Amsterdam Yerslagen for 1802, page 7, 

 " A vrai dire, ce lobe posterieur ou occipital ne se prulonge pas 

 autantque chez l'homme; il ne recouvre pas si bien lecervelet, du 

 moins il ne la cache pas completement surtout vers les cotes; mais 

 il n'y a rien la dedans, qui nous empeche de lui donner le nom 

 qui lui est du. Par rapport an developpement du cervelet, nous 

 ne croyons pas faire une chose inutile en rappelant que, d'apres 

 les mesures que nous avons publiees en 1849, le cervelet du Chim- 

 panse et de l'Orang est proportionnellement plus grand que celui 

 de l'homme. Cela doit avoir une certaine influence sur la maniere 

 dont il se trouve pour une partie a decouvert chez ces animaux 

 qui ont les lobes occipitaux moins e'tendus que ceux de l'homme." 

 Their plate, Fig. 1, giving the brain of the Orang, shows quite 

 plainly the cerebellum partially uncovered by the cerebrum. In my 

 Chimpanzee the cerebellum was extremely well developed, as ma}' 

 be seen from Plate XL, Fig. 2. Should future investigation show 

 that the posterior lobes of the cerebrum do not invariably over- 

 lap the cerebellum, as in the Chimpanzee dissections just referred 

 to, and in the Orang of Vrolik and Gibbon of Huxley, it will only 

 be another instance of the truth that the lower monkeys in some 

 respects are more nearly allied to man than the Anthropoids, for 

 I have found the cerebellum entirely covered by the cerebrum in 

 the genera Macacus, Cynocephalus, Semnojyithecus, Ateles, Gebus, 

 etc. Prof. Huxle}^ observes, " if a man cannot see a church, it is 

 preposterous to take his opinion about its altar-piece or its painted 

 windows 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." 1 Now it does not 

 follow because the cerebrum did not overlap the cerebellum in my 

 Chimpanzee that there was no posterior lobe. It is one thing to 

 state that the posterior lobe did not entirely conceal the cerebel- 

 lum, and another that the posterior lobe did not exist at all. 

 Further, when the proper section was made of the lobe the pos- 

 terior cornu of the ventricle was very evident, Plate XII., Fig. 3, 

 as also the hippocampus minor, and indeed there was the emi- 

 nentia collateralis as well. It seemed to me that it was not so 

 much that the posterior lobe with its contents was undeveloped in 



Man's Place in Nature, p. 99. 



