. -^83 ) 
of Water, till there was formed fomevvhat more then 
an Hemefpheruk of Water then keeping the Wire 
Ered, I appiied it to my Eye, and ftaoding at a pro- 
per difiance from the lights I Ciw them and fome other 
Irregular Particles, as I had predi^ted^ but moft Eoor- 
moufly Magnified ; for whereas they are fcarce dif- 
cernable by the Giafs Microfcopes, or the firO: AqHeom^ 
one within the Globule, they appeared not much diffe- 
rent both in their form, nor lefs in Magnitude then 
ordinary Peas, They cannot well be feen by Day -light, 
except the Room be Darkned, after the manner of the 
famous Dioptrical Experiment, but moft diftindly by 
Candle-light; they may be very well feen by the full 
Moon Light. 
The Pin fometimes takes up the Water round enough 
to ftiew its Objects diftinft. 
The fnfeds I have as yet this way obferved, are of 
two forts, Globular and Eiipticai ; I fliali firft defcribe 
the former. 
They are of a Globular Form, they are but a kittle 
lefs Tranfparent then the Water they fwim in,- they 
have fometimes two Dark fpots Diametrically oppofite^ 
but thefe are rarely feen ; thsre are fometimes two of 
thefe Globular Infeits ftickiog together ; where thejr 
are joyned 'tis opacous, pofTibly they may be in the a<3r 
of Generation ; they have a twofold motion, a fwifs 
Progreffive Irregular one ,• and at the lime time a Ro- 
tation on their Axes at Right Angles to the Diameter 
that has the dark Spots, but this is feen only when 
they move flowly. They are almoft of an incredible 
Minutenefs. Mr. Leewenhoek is moderate enough in 
I his Computation , when he tells us ( Philofophical 
! Tranfaftions, zi^. Page 198. ) he faw Infeds 
in Water, (b fmall, that 30000 could not more then 
^1 equal a Courfe Sand 5 but I believe it will feem a Pa- 
