270 PKOCEEDINGS OF THE CALIFORNIA 



ing collection of fossils has been brought by Mr. Clayton. The specimens are 

 uufortunately in a very imperfect and fragmentary condition, but they contain 

 the first trilobites which have been brought to our office from any of the Pacific 

 States or Territories. The rock in which they occur is a dark yellowish brown 

 limestone, with intercalated layers of light grey argillaceous shales. Some of 

 them appear to belong to the genus Dalmania, and, if so, the formation is 

 probably of Upper Silurian age, although possibly Devonian. The careful 

 examination of the corals which have been obtained in this district by Mr. 

 Clayton, and also by Mr. Blatchley, will probably throw some additional light 

 on the geological position of these rocks. 



Regular Meeting, June 4th, 1866. 

 President in the chair. 



Eleven members were present. 



The following named persons were elected Resident Members : 

 C. R. King, Frederick Gutzkow, Theodore Blake, W. A. Goodyear, 

 Charles Bonner, C. W. Lightner, Hugo Hochholzer, James T. 

 Gardner. 



Donations to the Cabinet: Copper Ore, from Yarrow mine, near 

 Lexington, Santa Clara county, and Molybdenite, from Coloma, El 

 Dorado county, from Mr. Hanks. Land, river, and marine shells 

 collected in Central and South America by the late Thomas Bridges ; 

 presented by Mrs. Bridges. Two birds from Mr. Lorcpuin. A 

 collection of Australian plants, from Dr. Ferdinand Miiller. Lich- 

 ens from Plover Bay, collected and presented by Mr. Dall. 



Donations to the Library : Verhandlungen der kaiserlich en 

 Leopoldino- Carolinischen deutschen Akademie der Naturforseher, 

 Band XXXII, l ste Abtheilung ; 4to Dresden, 1865. Amtlicher 

 Bericht uber die 39 te Versannnlung Deutscher Naturforseher und 

 Aerzte in Giessen im September, 1861 ; 4to, Giessen, 1865. 

 Jahrbuch der k. k. geolgischen Reichsanstalt ; 1865, Band XV. 

 No. 4, roy. 8vo. Wien. Nachrichten von der k. Gesellschaft und 

 der Georg-Augusts-Universitat, aus dem Jahre 1865 ; 12mo. 

 Gottingen. 



The above were presented by the different Societies named, and 

 forwarded through the Smithsonian Institution. 



