528 Mr. hunter’s Account of 
form, as it were, originally impreffed on it by the hand 
of nature. 
It is well known, that there are many orders of ani- 
mals which have the two parts, defigned for the purpofe 
of generation, different in the fame fpecies, and which 
are thus divided into male and female: but this is not 
the only diftinguifhing mark in many genera of ani- 
mals; in the greateft part of animals, the male being 
diftinguifhed from the female by various marks. 
A lion is different from a lionefs ; a cock from a hen, 
See . ; particularly the voice in many animals of the fame 
genus is different : fuch I fhall call fecondary properties, 
which take place only in parts that are neither effential 
to life nor generation, and which do not take place till 
towards the age of maturity. However, this diftinftion 
of fexes, by any other marks than the difference of the 
parts of generation, is not obfervable in every order of 
animals ; for inftance, there is very little difference be- 
tween a dog and a bitch, exclufive of the parts of gene- 
ration. 
In thofe orders of animals, which are compofed of 
diftinfl fexes, we may obferve, the genital organs not 
only fubjeft to a mal-conformation, fimilar to a mal- 
conformation in any other part of the animal; but we 
may likewife fometimes obferve an attempt to unite the 
two 
