Regular Meeting, August 21st, 1865.

Mr. Fisk in the chair.

Nine members present.

Donations to the Cabinet: Specimen of Chromic Iron, from Tuolumne County, by Mr. Hanks.

Mr. Bolander submitted a paper on the Grasses of Arizona, with the following remarks:

The following List of Grasses, accompanied by the very judicious and practical observations of the Corresponding Member of our Natural History Society, Mr. C. J. Croft, of the 1st Cavalry California Volunteers, was received by mail from Fort Goodwin, Arizona Territory, some little time since. From the same intelligent source, we have, from time to time, received many valuable specimens, preserved with uncommon care, and reaching us in a state quite unusual, even from localities far more favorably situated. We are very hopeful, we shall shortly be placed in possession of specimens of the seed of the White Layia Mexicana, for ornamental culture, as also of a species of native Potato, from the same indefatigable individual, who has also furnished us with a very interesting account of numerous species of the Cactus family, of that District.