liead, and I could never with my utmoft application find 
to much as a dividing Line in it. Some of them, tfpecial- 
\y in forne Waters^are dark and cloudy, but they are gene- 
raily fo tranfparent.that through theSliell lean fee the peri- 
ftaltick motion quite through their whole l€ngth,andacon' 
ftant pulfttion of a part, which I guefs is the Heart, but I 
could never difcover any courfe of Blood in them (nor 
even in Shrimps themfelves which are as large as fomc 
thoufands of thefe; tho I have feen ii plainly in Creatures 
a little bigger, ^//2;. the fmalleft new hatched Spyders, and in 
that Water Infedt which is defcrib'd ^^nd pidur'd (tho not 
accurately) by Sxvammerdam^ under the (very improper) 
name of Pukx aqnaticus. But this is of the Teftaceous 
kind, of which I have feen a greater variety (and notlefs 
curious ) than of the Cruftaceous 5 but 'tis too late to call a 
a new Caufe, 
Julys. 1703. 
Since my laft, I have farther obferv'd the Lens pahftris^ 
and am fully (atisfy'd of the truth of its firft fpringing 
from the bottom. I lately took up fome on the (liaDow 
fide of a Pond.j and found the ends of the Stalks ( mpft of 
which were at leafl: 5 inches IcAig, and as thick as a ftrong 
Horfe-hair) mamfeftly radicated in the bottom, fo that I 
could not take them up without raifing the Mud with them, 
Vt/hich a!fo adhered very vifibly to them. Thefe Stalks or 
Pvoots are of a curious texture, and almoft tranfparent, 
and r have feen their outfide very prettily coverd wiih a 
^regular fort of Net-work. The Draught in t\iQ Tranfacf. 
28,^, is very ftiff, and ill reprefcnts them. 
In 
