160 Of the Animalcules 
another with as much Briiknefs and Vigour 
as if the Cock had been but newly dead, tho’ 
it was killed the Day before : and by feve- 
ral Trials on the Semen of other Cocks, it 
has been found, that the Animalcules therein 
will live many Hours in a capillary Glafs 
Tube. To a flight Obferver they feem in 
the Form of Eels ; but if the greatefl Mag¬ 
nifiers'be ufed with due Attention, they will 
be foud fhaped as Fig. III. Plate XII.— 
Their Size is fo extremely minute, that a 
* million of them are fuppofed not to ex¬ 
ceed the Bignefs of a Grain of Sand and 
their Tails cannot be difcerned without much 
Difficulty, being ten thoufand Times more 
flender than the Hair of a Man’s Hand. 
A little of the Seminal Matter taken from 
the Teilicle of a Dog abounded with Ani¬ 
malcules i~, a million whereof would hardly 
equal a large Grain of Sand : and after fome 
of this Matter had been kept Seven Days in 
a Glafs Tube, feveral of the Animalcules re¬ 
mained alive and vigorous. [Their Form is 
flhewn Fig. IV.]—The ^Teflicles of a Hare, 
though four Days dead, were alfo exceed- 
Ingly full of Animalcules like thofe in Dogs, 
fwimming in a clear Liquor, but without 
Motion. 
* Arc. Nat. Tom. II. Par. II. p. 369. 
f Arc . Nat. Tom. I. Par. II. p. i< 5 o. 
Killing 
