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11 bittern, being heard a great while before they can 
“ be feen, flying in armies in the air.” 
From this paffage, it is plain our author had exa- 
mined the interior parts of this colum and ferafs, and 
that they are different fpecies of the fame genus. We 
can only, however, endeavour to find what this genus 
is j and, by what we have heard of the crane, it is not 
improbable that they are of that kind. The crane, 
by every author, is faid to take long flights in vaft 
multitudes ; and to make a great noife in the air. 
The colum and ferafs are faid to come to the rivers 
and lakes about Surat orDuccanfrom Caucafus, flying 
in armies, and making fo great a noife, that they are 
heard a great while before they are feen. Again, by 
his fhort account, we may ealily learn, that they are 
not the crane that is defcribed in this paper, becaufe 
the colum has a volution of the wind-pipe on both 
lides of the keel of the ffernum, the crane but one ; 
and I fuppofe, from the likenefs of the ferafs to the 
colum, he fays, that the former is a fpecies of the 
latter ; nor can we have room to fuggeft that thefe 
birds are of the wild goofe kind j becaufe he mentions 
the brand geefe firft, without taking the leaft notice 
of their afpera arteria ; and confines the reft of the 
paragraph to the other two, calling the one a fpecies 
of the other. 
Thefe are all the birds that have hitherto come to 
my notice, having this remarkable fledtion in the 
afpera arteria ; it now only remains to mention farther 
that of the land tortoife, which I bring in here on 
account of a fimilar formation of that organ in him. 
Having never differed a land tortoife myfelf, I 
muft have recourfe to thofe that have - } and acordingly I 
find 
