Of the Flea. 195 
feveral Days fucceflively ; which Eggs hatch 
in the fame Order. 
A DiffeCtion of the Flea may he effect¬ 
ed after the fame Method as that of the 
Loufe , that is, in Water : the * Stomach and 
Bowels, with their periftaltic Motion, may 
plainly be diftinguiffied, andalfo the-fTefles 
and Penis, together with Veins and Arteries 
minute beyond Conception. Leeuwen¬ 
hoek affirms, that he has likewife difcovered 
innumerable Animalcules ffiaped like Ser¬ 
pents in the Semen mafculmum of a Flea . 
Two Things in this Creature deferve our 
Confideration, to wit, its furpriling Agility, 
and its prodigious Strength, whereby it is 
enabled to leap above an hundred Times its 
own Length; as has been proved by Expe¬ 
riments. What vigorous Mufcles ! and how 
weak and fluggiffi, in Proportion to its own 
Bulk, is the Horfe, the Camel, or the Ele¬ 
phant, if compared with this puny InfeCt! 
A Flea’s Egg is ffiown Plate XIII. Fig. 
VI. 1. 
The Worm or Maggot proceeding from it. 
Fig. VI. 2. 
* Vid. Arc. Nat. Tom. IV. p. 20. 
t Again, pag. 335. 
W -t 
CHAP. 
