Siete 9 
FIG. U. 
This minute animalcula is frequent in flagnant water, or in in. 
fufions of vegetables, and is one fpecies of thofe whofe exiftence can 
only be difcovered by a good microfcope. It is very difficult, confi- 
dering the power thofe creatures have to diftort their true form at plea- 
fure, to fix their diftinguifhing character ; therefore where the definition — 
appears dubious, we prefer being filent rather than hazard an error. 
fic.2. Reprefents them (magnified) as they fometimes feem to 
low the leader in herds; but perhaps it is only the {cent of the prey 
that induces each to follow the foremoft, ‘as they frequently fwim or 
whirl in the water feparately, with great {wiftnefs, devouring the 
fmaller kinds of animalcule. 
fo 
Fic. 3. Two, magnified by a deep power, when they appear to 
have feet or fins, 
Fic. 4. Shews the ftrange form it affumes whilft depofiting its eggs. 
Fic. 5, The eggs deeper magnified. 
PLATE 
