2 ? / 
[xi] 
If any Perfons in England (hall be defirous to 
make Obfervations on the Eolypus , and to repeat my 
Experiments; I hope I fhali be able to fend fome over, 
in cafe they fhali not be found there. 
They are to be look’d for in fueh Ditches whofc 
Water is flock’d with fmall Infeds. Pieces of Wood, 
Leaves, aquatic Plants, in fhort, every thing is to be ta- 
ken out of the Water, that is met with at the Bottom, 
or on the Surface of the Water, on the Edges, and in 
the Middle of the Ditches. What is thus taken out, 
muft be put into a Glafs of clear W ater, and thefe 
Infeds, if there are any, will foon difeover them- 
felves; efpecially if the Glafs is let ftand a little, with- 
out moving it ; for thus the Infeds, which contract 
themfelves when they are firft taken out, will again 
extend themfelves when they are at Reft, and become 
thereby fo much the more remarkable. 
In order to feed them, one muft know how to 
provide one’s felf with Infeds fit for their Food. 
If that is thought neceflary, I will point out the 
Means I make ufe of for that Purpofe. 
I am ready to impart to every one who fhali defire 
to make Obfervations on thefe Animals, all the Means 
and Contrivances I have ufed j to enable them to 
pradife the fame, and to judge of them. 
I fhali fet forth all thefe Means and Contrivances in 
the Hiftory of the Eolypus , which I am now at work 
upon. But if, before its Publication, any Informa- 
tions fhould be defined, I again repeat, that I fhali be 
ready and willing to furnifh them. 
[ bi ] 
An 
