This agrees pretty well with the results of the analysis, although it is desirable that more specimens should be examined, and if possible from other localities. I am informed by Mr. Ashburner that he has noticed this mineral at more than one mine in Lower California.
At all events, I would suggest for the mineral in question the name of Cuproscheelite, as convenient for designating it, and as expressing its chemical and mineralogical relations, whether it be considered as a mineral substance having a distinct and fixed composition, or only as a variety of Scheelite, containing a large but uncertain amount of oxide of copper.
Dr. Ayres called attention to the fact that a carcase of a Black fish could be procured at the Potrero, at a small expense, and a subscription was raised for its purchase.
Professor Whitney exhibited a branch of Sequoia sempervirens, taken from a small tree growing near San Rafael, of which the leaves are entirely white. The tree presents a very singular appearance, surrounded as it is by other redwoods of the usual color. The fact was elicited that similar blanched redwoods exist in other localities in the Coast Ranges; but no explanation or theory was offered to account for this curious, abnormal blanching of the foliage of a single species—a similar condition of things not having been noticed, so far as known, in any other species than the redwood.
Regular Meeting, August 20th, 1866.
Dr. Kellogg in the chair.
Ten members present.
Messrs. W. H. Knight and A. Godefroy were elected Resident Members.