393 
what his views on the subject might have been. Partly from a 
perusal of much that Aristotle has written on the subject, but 
mainly from the new Index by Prof. Bonitz, he gave a résumé 
of the passages bearing on the subject: these passages seemed 
to shew that Aristotle considered, (1) that the right hand or 
side was naturally the source or origin of motion, (2) that in 
nearly all living creatures capable of motion it is the better or 
stronger side, (3) but that while the heart is always the origin 
of vitality, it is in the human race only set towards the left 
side of the body; in all other living creatures it is in the 
centre of the body or trunk (€v peo@ xelrat Tod avaryKatov 
cauatos). And though it may be a fair question how far 
Aristotle was misled by the preferential use of the right hand 
by the human race to attribute an excellence in the right side 
to the animal world, there can be no mistake about the dis- 
tinct language in which he does so. 
The passages referred to by Mr Pearson were as follows: 
Tlept Zewv Mopior, 1. 2; 11. 3, 4, 5; IV. the whole sec- 
tion, especially n. 8. 
ep) Zdwv ‘Ioropias, 1. 17; 1. 1. 17. 
Tlepi Zwwv Ilopetas, XIX. 
Nicom. Eth. v. 7 (10). 
*Magna Moral. I. 34. 
Politics 11. (9) 12. 
* Problems V. 37; V1. 5; XXXI. 12, 13. 
De Respir. 16. 
Plato, Legg. Vil. 795. 
Macrobius vil. 14. 
Some observations were added about the terms in which 
Mr Lewes in his work on Aristotle (1864) criticizes some errors 
into which that writer has fallen in his works on Natural 
History, while it was admitted that he is probably right in con- 
sidering that there is no reference in Aristotle’s writings to the 
anatomical examination of any but animal subjects : though the 
