t 513 3 
little warmer than the air, wherein the tube is, but the 
air in the tube is alfo extended, and more magnified 
thereby, which doth put the water into a motion, 
and is forced from D to A, although we perceive no 
motion with our naked eye. 
Now as the leaft warmth doth extend the air, that 
is included in the lefler tube , fo the warmth is alfo 
eafily gone agaiji from the tube, whereby the water 
doth receive a motion again, from C to B. 
In this water were two of the faid fmallround parti- 
cles, and that of the greateftfort 5 and in each of them 
were included five fmaller round particles, which in- 
clofed particles were pretty well grown in. bignefs, and 
in a third great particle were lying feven leffer round 
particles, which laft were incomparable fmall. 
After the expiration of four days fince the named 
particles had been put into the faid tube, I fawthat two 
of the fame, the outmoft skins, ^^whici h were extraordi- 
nary thin and tranfparentj^ere broke in pieces ^ and 
that the ten particles, that had been (hut up, in the 
two great ones, by the moving of the water were mo« 
ved from one fide to the other. 
■ I obferved further, that, after the ejtpiration of five 
days, the fmall particles, that were included in the 
third great particle, were not only inereafed in big- 
nefs, but I could alfo then difcern that from theinfide 
of the fmall .particles ftiould come forth round fmall 
particles. 
After the expiration of five days^ more, the third 
round particle was alfo a little broke open, and the 
particles that did lye there within were aifo got out, 
and although it was open at one fide, yet did it turn 
about in the water, and that as nimbly as ever it had 
done before. 
' Some days after I could not difcern any, but only 
fonie fraall particles, whereof the great one did con- 
R k k k 2 fift, 
