Of the Muscle. 243 
the Blood may be feen circulating through 
an amazing Number of Veffeis, even in the 
fmalleft Particle of it that can be applied for 
Examination. 
Mr. Leeuwenhoek, in feveral that he 
differed, difcovered Numbers of Eggs , or 
Embryo-Mufcles, in the Ovarium , appearing 
as plainly as if he had feen them with the 
naked Eye, lying with their {harp Ends 
fattened to the Strings or Veffeis whereby 
they receive Nourittiment. Thefe minute 
Eggs, or Embryo-Mufdes, are, in due Time, 
laid or placed by the Parent in a very re¬ 
gular and clofe Order on the Outiide of the 
o 
Shell: where, by Means of a glewy Master, 
they adhere very faft, and continually in- 
creafe in Size and Strength, till, becoming 
perfect Mufcles , they fall off and fhift for 
themfelves, leaving the Holes where they 
were placed behind them. This Abundance 
of Mufcle-Shells viewed by the Mlcrofcope 
can {hew. Sometimes two or three thoufand 
of thefe Eggs adhere to the Shell of one 
Mufcle; but it is not certain they were all 
ttxed there by the Mufcle itfelf, for they 
frequently place their Eggs on one another’s 
Shells. The fringed Edge of the Mufcle, 
which Mr. Leeuwenhoek calls the Beard, 
has in every the minutett Part of it fuch a 
Variety of Motions as is inconceivable : for 
being compofed of longifh Fibres, each Fibre 
has on both Sides a vaft many moving Parti- 
2 cles, 
