C 54 ? ] 
Cold back again : Every one who feels his Hands 
tingle in a frofty Morning, and looks at the Weather- 
cock, muft be fenfible of it. 
Since, therefore, a large Surface of Earth to the 
North of us, aflifted only with a Privation of the 
Sun’s Heat, cannot produce Cold to fo great a Degree, 
as to affedt the Weather with us ; and lince it appears, 
that that which is to help thefe Two Caufes to pro- 
duce fuch a Cold, is brought by the Winds, and 
carried off again; I muft conclude, that there are 
frigorific Particles floating in the Air, whether they 
be Nitre, or by whatever Name the Chymifts will 
call them ; that they are always adting, unlefs ob- 
ftrudted by other Caufes ; and that, when they find 
a proper Recipient, and all Obftruftions be removed, 
they a with Vigour. 
When I fpeak of the Seeds of Cold, I do not mean, 
that Cold adts as a Vegetative: Though whoever 
confiders the Order that Froft obferves in building its 
Ice upon the Water, will be apt to think, that if it 
be not the Effedt of Vegetation, it is fomething that 
refembles it very near. 
It firft (hoots out a fmall (trait Twig ; then, from 
the fame Centre, one on each Side ; from thefe main 
Beams dart out fmaller Sprigs on each Side, to form 
the Contignation ; then thefe Rafters fending forth 
their Sprays, the whole Floor is laid, weak at firft; 
but as they gather Strength, they make a Plancher, 
ftrong enough, fometimes, to bear the Weight of 
whole Armies palling over the Baltic. 
I do not expedt, that the Ladies will expofe them- 
felves fo much to the Cold, as to fee all this : But if 
they pleafe to give themfelves only the Trouble to * 
look 
