C l 7 r ] 
I fhall only add further, that I have already com- 
municated thefe Obfervations to feveral Perfons of 
the greateft Knowledge and Diftin&ion, who have 
been p'eafed attentively to examine the lame, and 
thereby given me the Satisfaction of having the bed 
and mod unexceptionable Witnefles to all the prin- 
cipal Fads that are mention'd in the inclofed Account ; 
which I now put into your Hands, and remain, with 
the trued Refped, 
E find, in divers Places, upon Water-Plants, and 
other Bodies in the Water, a whitifh Subftance, 
that looks at firft only like a fort of Mould : We fome- 
times fee Plants, Sticks of Wood, Snail-fhells, and the 
like, that are entirely covered over with this Sub- 
ftance. But if we take any of thefe, put them into 
a Glafs of clear Water, and then examine with a 
magnifying Giafs what is upon them, we foon dis- 
cover, in the little Bodies, that, by their Aftem- 
blage, form this whitifh Subftance, luch Motions as 
give fufficient Reafon to look upon them as living 
Animals j and this will appear yet more fenftble, 
when they come to be obferved with a Microlcope. 
We then find them to be minute Bodies, feverally 
fixed to the Extremities of fmall Stems, or Pedicles, 
S I R, 
Tour moft humble , 
and mojl obedient Servant , 
A. Trembley, 
many 
