70 . PHILOSOPHY OF ZOOLOGY. 
tence of syrup. On cooling, white cubical erystals will 
be obtained. It is less sweet than vegetable sugar, and 
the empyreumatic oil which it yields by distillation, has 
a smell resembling benzoic acid. The following analyses 
by Gay Lusac, Tuewanp, and Brerzerivus, exhibit its 
composition : 





Gay Lusac . 
and Thenard. ie 
Hydrogen, 7.544 7.167 \ 
Carbon, 38.825 89.474 
Oxygen, 53.834 53.359 * 

According to BERzEL2us, it contains more carbon and less 
oxygen than common sugar. Dr Prout, however, obtain- 
ed from diabetic sugar, and sugar of milk,—results so near- 
ly similar to those afforded by common sugar, when sub- 
mitted to the same mode of analysis, that he regards them 
all as essentially the same substances, affected a little in 
their exterial characters, by small quantities of some extra- 
neous substance. He states the result as follows: Hydro- 
gen 6.66 + carbon 39.99 + oxygen 53.33 =100.00 +. 
Honey, which resembles sugar in many of its properties, 
can scarcely be regarded as a product of the animal king- 
dom. 
8. Oils.—The different bodies found in animals, refera- 
ble to this division, vary greatly as to colour, consistence, 
smell, and other characters. They possess, however, in 
common, the properties of the fixed oils, in being liquid, 
either naturally or when exposed to a gentle heat, msolu- 
ble in water and alcohol, leaving a greasy stain upon paper, 
and in being highly combustible. 

* Annals of Phil. ve p. 266. + Ib xi, p. 354, 
