l$S Of the Animalcules 
Hair * of his Head near them, which Hair 
through his Microfcofe appeared an Inch in 
Breadth; and he was fatisfied that at lead 
fixty fuch Animalcules could eaiily lie within 
that Diameter : whence, their Bodies being 
fpherical, it muft follow,, that two hundred 
and fixteen thoufand of them are but equal 
to a Globe whofe Diameter is no more than 
the Breadth of fuch an Hair. 
He obferved, that when the Water 
wherewith he had diluted the Semen of a 
Cod-hfh was exhaled, the little Bodies of 
the Animalcules burft in Pieces, which did 
not happen to thofe in the Semen of a Ram; 
which he imputes to the greater Firmnefs 
and Confiftency of the latter, as the Flefh of 
a Land-Animal is more compad than that 
of a Fifh. He like wife takes Notice, that 
the Tails of thofe in Fillies are fo extremely 
Render, that he could never be certain of 
his feeing the very Tips or Extremities of 
them. 
In the Milt of a jack at lead h ten 
thoufand Animalcules were diicernible in a 
Quantity not bigger than a Gram or Sand, 
exactly in Appearance like thofe of the Cod- 
fhh; and upon putting % four Times as 
much Water to it, they were perceived to 
become drooger and briiker, and 'to fwim 
# Phil. Travf Numb. 270 . f Arc, Nat . Tom. I. 
Par, IL p. 2 . % PhiU P'ranJ Numb. 270 . 
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