Part I. Of the Eggs and NeHs of "Birds. 
of the Wings. Both given by the forementioned Per- 
fon. 
The HEAD of the TROPICK BIRD. 
The two Tail-Quills of the fame. 
CHAP. IV. 
Of the EGGS and NESTS of BIRDS. 
OF EGGS, there is here a confiderable number: which 
therefore I thought fit to put altogether in this 
Chapter. Their Figures, as they ftand together, appear 
the more various. For fome are almoft Sphaerical or 
Round as a Ball : others, as the mod, are more oblong. 
Of thefe, fome few are perfectly Oval, i. e. with both the 
ends defined with two equal EUipfes : but moft are Conical, 
or with one end fharpcr than the other. Of thefe again, 
moft have their fmaller end but Bl ant 3 fome few, very 
fharp. Laftly, almoft all both Blunt and Sharp are Con- 
vexly Conical, i. e. they are all along Convex, not only 
per ambitum, but between both ends : whereas fome few 
are Piano-Conical , whofe Superfice is in part level be- 
tween both ends. 
Their Colours arc alfo various 3 as White, Pale, Livid, 
A(h-colour, Blew, Brown, Green. Their Spots, and Speckles, 
are alfo Iron-colour d, Red, Bay, Musk-colour, Black, &<r. 
the Caufes of all which, both Figures and Colours, were 
no unfit fubjecl: of enquiry. But here I can do little 
more than fhew, to what Eggs in particular any of them 
do belong. 
The EGG of an OSTRICH. Tis very fmooth, and 
white 3 all over pricl: as it were with extream fmall brown 
Specks. Almoft of a Sphserical Figure. About half a foot,by 
its Axis, from end to end. Round about, by the breadth, 
fixteen inches , i. e. near five inches and 5 ftrait over. 
Both the ends of an equal Convexity. Sometimes fo big, 
faith Mr. Willughby , as to weigh fifteen pounds. The 
Shell is of anfwerable thicknefs, in regard to itsbignefs, 
to that of other Birds Eggs. They are fometimes fet in 
Silver, and ufed as Cups, 
L 2 Another 
