APPENDIX. 
89 
P'fix in land animals. The organ of seeing is diffe- 
in those animals which are formed to see in 
'''ater, and in those which see in air ; it differs again 
those which are to see with little or much light ; 
those peculiarities are illustrated by preparations, 
''a pigmentum nigi-um in some fishes resembles 
Po'ished silver ; in ruminating animals, at the bottom 
the eye it has a greenish hue ; in the lion and cat 
a portion of the bottom is white, but as a.ge- 
principle, the colour of the pigmentum is the 
®aine as the retc mucosum of the skin of the animal, 
white in white animals, and black in very dark 
"ties. 
j After the brain and senses, are arranged the cellu- 
**>embrane and animal oils, which are followed by 
® external coverings. These are divided into the 
^^nerent kinds, as hair, feathers, scales, &c., with 
® fete mucosum, or that membrane which is inter- 
Pesed between the true and scarf skin, for the pur- 
^®®e of giving the peculiar colour. Added to these 
the parts peculiar to different animals for offence 
defence, as spurs, hoofs, horns, stings, and also 
** ®etric organs. There follow next such peculiar 
®^'nctures as occur in certain tribes of animals, as 
® 'bladders in fish, &c. 
t he fourth class begins with the animals which have 
distinct parts allotted for generation, that power 
diffused over the whole animal. In these the 
I't'g grow out of the old, as in the coral and 
ypt ; and next in order come the hermaphrodite 
