70 
lungs of the mammalia vary according to the seve- 
ral destinations of genera and species. In many the 
structure is closely related to that of man: in some, 
as in the cetaceous and amphibious mammalia, there 
is an approximation to the more simple sac-shaped 
lungs of ophidia, chelonia, sauria, &c. The varie- 
ties in the number of pulmonary lobes are nume- 
rous. The greatest number is in man. The num- 
ber in the right is usually greater than in the left. 
In some, however, the lung on each side is undi- 
vided, as in the horse, elephant, and rhinoceros. In 
the bat and flying maki, it bears resemblance to the 
” 
single lungs of birds. “ If, however,” says Carus, 
“we view the respiratory organs as an index of 
mind, and of its feelings, what animal can be com- 
pared with man"?” Having shewn that this supe- 
riority does not consist in the greater force of his 
lungs, but in the peculiarity of adaptation to the 
trachea and glottis, &c. as organs of voice, he adds, 
‘¢ As thought, produced in the head of man, crowns 
his completely independent and harmonic organiza- 
tion, so speech also receives its full perfection (of 
articulation) in the mouth of man. Nay tone alone, 
without reference to the expression of ideas, (by 
words,) has the power of indicating the minutest 
shades of passion and mental emotion, (as in impas- 
sioned singing, although the language be unknown,) 
and becomes to the feelings what speech is to the 
intellect.” 
> Vol. il. p. 208. 
