iG 
4qz NATURAL HISTORY. 
they chiefly refide; and by their necks and legs, 
which are proportionable in length. — 
Having thus briefly given an account of the differ-_ 
ent claffes, with their diftinguifhing peculiarities, we 
fhall begin our defcription with thofe which cannot 
be ranged fyftematically; fuéh as the oftrich, caffo- 
wary, condour, dodo, &c. which, being of extraordi- 
nary fize, and incapable of flying, are not included in 
the fix claffes before mentioned. — . 
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