242 



SCIENCE 



[N. S. Vol. XXVIII. No. 712 



Embracing their Industrial Resources in 

 Agriculture and Mining," by John B. Trask, 

 state geologist. Assembly Doc. No. 9, 1854, 92 

 pp. Contains a description of the Geology of 

 the Monte Diablo range ; Salinas Valley, from 

 Point Pinos to the ISTacimiento Eiver; Santa 

 Cruz Mountains; Structure of the valleys of 

 the Sacramento and San Joaquin; Review of 

 the geological changes in the Coast Moun- 

 tains and Monte Diablo ranges; Classification 

 of the rocks of the Coast Mountains and 

 Monte Diablo ranges ; Position and relation 

 of the volcanic rocks of the Tertiaries; Vol- 

 canic rocks preceding the Tertiary era; Most 

 recent volcanic rocks of the Coast Mountains ; 

 Changes of level and river terraces; Soils of 

 the Santa Clara valley and shores of the Bay 

 of San Francisco; Valley of the Salinas; 

 Soils of the Salinas, Pajaro Valley, Liver- 

 more Valley; Mineral resources of the Coast 

 Mountains ; Mineral districts, embracing parts 

 of the counties of Nevada, Placer, El Dorado 

 and Calaveras ; Quartz veins and their rela- 

 tive age in California; Character and posi- 

 tion of the older veins below the surface; 

 Present government of metallic veins; De- 

 scription of the mines, with a list of gold 

 mines. 



4. " Report on the Geology of Northern and 

 Southern California, Embracing the Mineral 

 and Agricultural Resources of those Sections, 

 with Statistics of the Northern, Southern and 

 Middle Mines," by Dr. John B. Trask, As- 

 sembly Doc. No. 14, Session of 1856, 66 pp. 

 Contains a description of the physical geog- 

 raphy of the Coast Mountains, lying north of 

 the Bay of San Francisco; Geological struc- 

 ture of the Coast Mountains; Mineral char- 

 acter of the primitive rocks of the Coast 

 Mountains ; Soils of Petaluma County ; Plains 

 west of the Sacramento River; San Ber- 

 nardino; Geology of Table Mountain, Tuo- 

 lumne County; Carboniferous rocks of the 

 northern district; Salines of the Upper Sacra- 

 mento Valley ; Description of mines, etc. ; 

 Analyses of saline waters from Lick Springs, 

 Shasta County; Gold mines in operation in 

 1855; Table of altitudes. 

 . 5. " Report on the Geology of the Sierra or 



California Ranges," by John B. Trask; 

 Pharmaceutical Journal, vol. 14, 1855, pp. 

 20-24. 



His numerous papers on earthquakes in 

 California from 1812 to 1865 need only to be 

 mentioned here.' These have been listed by 

 General Vogdes' as well as Dr. Trask's other 

 papers. This list of titles I have quoted in 

 extenso from the General's paper. 



Dr. Trask's medical education, we learn 

 from Dr. Kellogg, was broadly thorough. He 

 successfully passed examinations in geology, 

 mineralogy, technical and applied chemistry, 

 proximate and ultimate analysis, microscopy, 

 medical botany, surgery, theory and practise 

 of medicine, and cognate sciences, completing 

 the course of lectures required for the cer- 

 tificate of the Tale faculty, according to the 

 laws of Connecticut. That he profited by and 

 made good use of these studies is evident from 

 his performance and the honorable recogni- 

 tion he received from various European and 

 American learned bodies and honorary degrees 

 from abroad for his researches in organic 

 chemistry, mineralogy, microscopy and medi- 

 cal botany. 



The following species of Californian mol- 

 lusks, recent and fossil, have been named in 

 his honor: (1) Limnoea TrasTeii Tryon; 

 (2) Helix (Epiphragmophora) Trashii New- 

 comb; (3) ActcBon TrasTeii Stearns; (4) Mere- 

 trix Trashii Conrad; (5) Ammonites Traslci 

 Gabb; (6) Oarhula Trashi Gabb; (Y) Nucula 

 Traslcana Meek; (8) Patella Traslci Gabb; 

 (9) Pecten Traslci Gabb. 



• Dr. Trask's data are practically embodied in 

 Dr. E. S. Holden's " Catalogue of Earthquakes 

 on the Pacific Coast, 1769 to 1897," Smithsonian 

 Miss. Coll., 1087, Washington, D. C, 1898. 



'"A Bibliographical Sketch of Doctor uohn B. 

 Trask," etc., by Anthony W. Vodges, with por- 

 trait, pp. 27-30, Trans. San Diego Society of 

 Natural History, Vol. I., No. 2, 1907. See, also, 

 Proc. Calif. Acad. Sciences, Vols. I., II., III., and 

 " Catalogue California Fossils," compiled by J. 

 G. Cooper, M.D., in Seventh Annual Eeport of 

 State Mineralogist, Sacramento, State Printing 

 Office, 1888. "Remarks of Dr. A. Kellogg on 

 the late Dr. John B. Trask before the California 

 Academy of Sciences, July 21, 1879." 



