May‘Water, &c. 77 
tion, or Twirling round as it were on a Point* 
I have taken Notice of in other Kinds alfo of 
the Animalcules found in Fluids. 
Another pretty common Sort, and in 
Shape fomewhat refembling the foregoing, 
is (hewn (Fig. VI.) Their Motion is very 
fwift, and always with the fharp End fore- 
mod, whence one may reafonably fuppofe 
it to be the Head. Some of them are clear 
from End to End, but curioufly ribbed in 
the Manner of a Melon : others are trans¬ 
parent at their fmall Extremity only, but 
have their Bottle-end opake. No Legs or 
Fins can be difcerned in either. 
We find another Sort, as long almoft as 
the larged in Pepper-Water , which are very 
brifk and aCtive, and have a Power of con¬ 
tracting or extending themfelves as they 
fwim along. At the End that feems to be 
the Fore-part, feveral Feet are vifible ; but 
efpecially when the Water is almod evapo¬ 
rated : for then they Ihrink into a globular 
Form, and their Feet danding out may be 
perceived to move very nimbly. Fig. VII. 1. 
reprefents one of thefe Animalcules at its 
full Length: 2. fnews another of them when 
contracted. 
There is likewife a Species of Animalcules 
whofe Bodies are fpherical, but pointed 
fomewhat like a Pear, and refembling Blad¬ 
ders filled with Water, wherein a vad Num¬ 
ber of dark Particles feem in a continual 
Agitation, 
