1 
in Semine Mafculino. 161 
Killing a Female Rabbet immediately af¬ 
ter the Coitus, and opening the Uterus there¬ 
of, innumerable Animalcules were found in 
a fmall Drop, taken from the Mouth of the 
Fallopian "Tube , where it opens into the Ma¬ 
trix : but none were difcerned in the Uterus 
itfelf, or farther along the Tube. They had 
long Tails, and for the mod: Part * fix 
tranfparent Globules appeared on the Body 
of each, as in Fig. V. i. though fome had 
only one Globule at the End of the Body, 
and another in the Tail, as Fig. V. 2. 
Examining a Drop of Semen taken from 
the Tefticles of a Ram, it abounded with 
Animalcules in as great Numbers as the fe- 
minal Matter of other Creatures ; but with 
this extraordinary Singularity, that Mul¬ 
titudes of them fwam the fame Way to¬ 
gether. 
* Arc. Nat. Tom. I. Par. II. p. 160. 
f Mr. Leeuwenhoek opened the Uterus of an Ewe, 
which about feventeen Days before had been coupled with 
a Ram, and in one of the Cornea obferved a little reddijh 
fiejhy Subjiance, wherein no Shape could be diftinguilhed. He 
put this in a Glafs Tube the Thicknefs of a Quill, filed with 
Oil of'Turpentine, and applied it to his Microfcope ; but could 
make nothing of it in that Manner. Wherefore he took it 
from the Tube, and extending it very gently out of the round 
Figure in which it lay, he perceived extremely plain the 
Formation of all the Vertebra, with the Blood-VeiTels and 
Ramifications paffing over them, and in two Places could fee 
the Spinal Marrow. He could alfo diftinguifh not only the 
Head, but alfo the Mouth, Brain, and Eyes, the Bignefs of 
two Grains of Sand, and clear as Cryftal; He faw likewife 
M 4 the 
