C 15^7") 
were fo dividedj that they never fcU to the Eatth^ bat 
were exhaled up into the Clouds. 
In the faid ftnall Particles of Water are conveyed the 
above-mentioned finall AnimalcuU far up into the Land^ 
and when the Ground becomes dry, they contraft tbt m-- 
felves into an oval Figure, and the Pores of their Skin 
are fo well clos'd, that they do not pcrfpircat all, where- 
by they preferve themfelves till it Rains^ upon which 
they opea their Bodies and enjoy the moifture. And 
thus, in my poor opinion, it happens that we find thefc 
AnimAlcuWm every Meadow of our Country, none of 
which are very remote from the Sea or Water Canals. 
IL Solutio Problematis. 
A Clarijf. Viro Jo. Bernoulli in Diario Gallico 
Fehr. 140^- ^ropofitu 
Qum J). G. Cheyndo commmkaVtt Jo. Craig. 
PRoikma. Propofit^s Curv^E Geometric^ alias inoumeras 
Loogitudioe ^qaales iovenire, 
Solutio, Sint §^ co-ordinata! Ciirv^e datse 5 & Curv^ 
quaefitse fint co ordinate y i tarn ex conditione Probiema- 
tis eric dvoy ^ ~ ^ + ^y*- Ponatur d d w-- m d 2, 
node erit dy Js^ 2 m dm dz-^ nf dz^ ; io bac pro 
Js fubftituatur ejus valor per d w & determinatas expref- 
fus : & pro dz afrarnatur talis vaior cx w, dw & determi- 
natis compofitus. ut valores quantitstum x, dy fint rum- 
mabiks : Et fic habeotur x ac j Co-ordinar^e Curvas quxs- 
fiix. Q. -E, J. \ 
Exempkm j, lovenire Curvam a'qualem Lmx Pa- 
rabolic^. Sit 1 a htm redum Parabote > adeoq^ 2 a s 
Aaaaaaaaaa d s 
