ICO ANIMALCUIA OF INFUSIONS. h, 



pennaches, (polipi a fiocco). Befides, being clufter- 

 ed together like the fungi of rivulets, beilfhaped,- 

 and producing a vortex, which draws particles tO' 

 the mouth of the animalcule for food, and muiti- 

 pl^dng by a longitudinal divifion, they are alfo at- 

 tached to little twigs ;. thefe to larger, and the 

 larger to the common flem ; and all the various 

 branches, as well as the flem, animated by a 

 mod remarkable motion of contraction and ex- 

 tenfion. Still they are different from M. Trem- 

 bley's, for his produce a vortex, not by points, 

 of which they are deftitute, but by moving the 

 lips of the bell ; and, before divifion, by lofing, 

 the bell fliape and afiuming that of a roundifli 

 corpufculum : nor are they endov/ed with that 

 eontracHon and confequent elongation : they di- 

 vide into unequal parts, and the vortex ceafes 

 during divifion : finally, the contraction and ex- 

 tenfion of the branches is not natural and perio- 

 dical, as in our animalcula, but the effect of con- 

 ilraint or accident, when the water is moved. 



All the longitudinal divifions yet fpoken o£ 

 have commenced at the anterior part of the ani-- 

 malcule, that is the part before when it advances,, 

 and where the opening of a mouth may in many- 

 be perceived. But the divifion of other animal- 

 cula begins at the part exadly cppofite, or be- 

 hind. My obfervations here v/ere too late, and 



when 



