er 2

——

ron

a PULTE,

Se ieee

240 A TREATISE ON THE CONNECTION OF

the process of soap-making: a part of the caustic alkali combines with the sebaceous acid of the tallow, forming sebat of potash or sebat of seda—saline matters to be

found, with otherneutral salts, in soap-makers spent lyes.'

So far from lime rendering dung more soluble, it im-

pedes that process, by forming with the dung insoluble salts,

and it otherwise injuresthe dun g by disengaging and throw- ing zuto the air the ammoniac or volatile alkali, that other- wise would have combined, and have formed neutral soluble salts, with the phosphoric or oxalic acids of the dung, or other vegetable or animal matters. The mixing of bot lime with dung has been highly disapproved of in the preceding part of this Work; and the Author must now conclude, by observing, that the application of it, for the purpose of dissolving the imaginary oi] contained in dung, is too injudicious a praétice, as wellas, ina chemical point

of light, too erroneous a theory, to have been permitted

to pass without notice.

ADDENDA,