66 
leaves a strong and unpleasant scent upon the fin- 
gers when handled. The cerambyx moschata, allied 
to the beetles, retains long, even after death, a mixed 
scent of musk and rose water. The slug of the 
murex, famed for its purple dye, yields, with its rich 
colour, a scent of garlic; one of the sepia, an agree- 
able odour of musk. Among plants, the memory of 
every one will readily supply instances of contrasted 
savours. The bulb of the crown imperial and of the 
wild garlic, the leaf of the common geranium ro- 
bertianum, and alliaria, the blossom of the stapelia, 
the whole substance of several fungi, may be con- 
trasted with the blossoms of the rose, the carnation, 
and the jasmine. 
Lungs. 
The organization which is unceasingly in action 
by night and by day, the activity of which is so con- 
tinually necessary to the sustenance of life, which 
gives energy to the nerves, and heat and health to 
the blood, is that of respiration. ‘“ The respiration 
of animals,” says Mr. Carus‘, “ as it consists in the 
mutual action upon each other of the individual and 
the surrounding element, renders necessary the free 
and constantly renewed access of that element to 
the respiratory organs. This element is air, and is 
applied either immediately, or mediately by means 
of water; which must itself, as it were, have inhaled 
air, and must be thoroughly penetrated by it, in 
order to be fitted for supporting the animal respira- 
i‘ Introd. to Comp. Anat. translated by Mr. Gore, vol. ii. p.141. 
