LATENT 1IEAT,

1(20

tain degree, which is the freezing point; and w eknow not how much they contain of either belowthat point.

CARO UN E.

But since by this method, both the free andconfined caloric are extricated, the indicationsof the calorimeter must refer not only to t' e spe-cific heat, but also to that of temperature.

MRS. B.

True; but as it is always understood thatbodies when submitted to the calorimeter in or-der to compare their specific heat, should be ofthe same weight and temperature, the includingthe free caloric in the computation can make nodifference in the proportion.

EMILY.

According to the theory of latent heat, it ap-pears to me the weather should be warm when itfreezes, and cold in a thaw : for latent heat is li-berated from every substance that it freezes, andsuch a large supply of heat must warm the at-mosphere ; w'hilst, during a thaw, that very quan-tity of free heat must be taken from the atmos-phere, and return to a latent state in the bodieswhich it thaws.

MRS. B.

Your observation is very natural; but consider