56 proceedings of the california 



Adjourned Meeting, July 12tii, 1869. 

 Vice President in the Chair. 



Twelve memhers present. 



A. T. Winn and Isaac Wormser were elected resident mem- 

 bers. 



Donations to the Library : U. S. Sanitary Commission Memoirs, 

 Statistical, Wash., 1869, pam., 8vo. ; History and DevelQpment of 

 Races, by H. S. Orton, Madison, Wise, 1869, para., 8vo. ; Inau- 

 gural Report of the Directors of Cincinnati Observatory, May, 1869, 

 pam., 8vo. ; Catalogue des Livres, Cartes, et Vues de Venice, etc., 

 pam., 8vo. ; Programme de la Soc. Hollandaise des Sciences de 

 Haarlem, 1869, pam., 8vo. ; Walker Prizes offered for 1869 by 

 the Bos. Soc. N. H., para., 8vo. ; Catal. of Santa Clara College, 

 1869, pam., 8vo. 



Dr. Behr stated that in a recent invoice of prepared insects 

 which he had received from Acapulco, was a species of Northern 

 butterfly ( Vanessa anttopa') . The specimen was caught at a mine 

 back of Acapulco, at an elevation of 2,000 feet above the sea ; and 

 he thoufrht it would be a matter of interest to know how far this 

 Northern species of butterfly went into the tropics. 



Professor Bolander gave an interesting account of a trip which 

 he had taken among the Sierras, and a desci'iption of Emigrant 

 Gap and Bear Valley, in Nevada County, and the country sur- 

 rounding. His theory is that this beautiful valley was once a lake ; 

 large worn boulders and pebbles gave ample evidence of this. The 

 appearance of the mountains showed the effect of glaciers, and he 

 had no doubt that the cafion was produced by one of these immense 

 fields of ice. 



A large collection of plants made by hira were then exliibited. 

 They had been prepared with great care, and were exceedingly 

 beautiful. * 



Mr. PI. P. Carlton, who accorapanied Professor Bolander, stated 

 that he had made a collection of shells in the raountains, as fol- 

 lows : 



