Domestic Intelligence. 369 
potash of the feldspar not being entirely separated. It oc- 
curs in sufficient quantities to be used in the manufacture of 
lai 
porcelain. 
Oct.—Dr. Torrey read an analysis of a mineral dis- 
covered at Patterson, N. J. by Mr. Pierce. This sub- 
stance had been taken for prehnite, until the analysis of 
Dr. T. ascertained it to be the datholite, or silicious borate 
of lime. This rare mineral had heretofore been found only 
Norway, analyzed by Klaproth, and it may prove to be a 
new variety. 
ungus ; and it has hardly been noticed by any succeeding 
ton, communicated to the New-York Philosophical Society 
an account of this very singular production,” in which he 
maintained that it was a real fungus which was attached to 
the roots of living trees, and not as it been contended, 
Mage: abstract of this paper is published in the Ist Vo! ~of the Amer. Mon 
