Index 



tion, 69, 77, and the unconform- 

 ity between, 79, 267 ; north of 

 Mt. Diablo, lower and middle 

 zones, 71, 103; relations with 

 Chico, and Tejon, 263, figure of, 

 72, map of, 73; at Selby smelter 

 (type locality), 81, 88, 103; at 

 Benicia, 87, 103, 104; at Lower 

 Lake, Lake County, 89, 103, map 

 of contact formations, 90; in San 

 Mateo County, 99, at San Pedro 

 Point, 103; correlation with 

 Eocene of Atlantic and Gulf 

 states, 117, 120; list of locali- 

 ties, 152-154; at Rock Creek, 

 293; Lower Eocene, 395. 

 Fauna: summary, 106; list of 

 species, 107-111; climate during 

 relationship with Chico, and Te- 

 jon, 112, 114, 120; time-interval 

 between deposition, 117. 

 Stratigraphy, sections of, at: San 

 Pedro Point, San Mateo County, 

 103; Benicia, 104; Lower Lake, 

 Lake County, 104; near Mar- 

 tinez at type locality, 104; near 

 Selby smelter, Carquinez Straits, 

 104; Martinez-Eocene strata, 

 plate of columnar sections, 105; 

 north of Mount Diablo, 106. 



Marysville intrusive mass, 11; ores 

 at, 227, 230. 



Matehuala, ore deposition at, 230, 

 241. 



Matthew, W. D., 320. 

 Meekia sella, 263. 

 Membranopora (?) sp., 122. 

 Mendenhall, W. C, cited, 40, 258, 

 261. 



Merced series, near Santa Rosa, Cali- 

 fornia, 194. 



Meretrix. 135: figure of, 166. 



dalli, 135, 264; figures of, 166; zone 

 in Martinez formation, 71, 73, 

 74, 98, 103. 

 stantoni, 134, 264; figures of, 166. 



Merriam, J. C, 99, 102, 275, 283, 289, 

 320, 336, 365, 377; cited, 64, 65, 

 66, 67. 121, 204, 277, 305, 350, 

 388, 391, 392, 395, 429, 440, 442. 



Mervehippus, sp., 276, 279; figures of, 

 280. 286. 



Merveodus, sp., 276, 280, 287; figure 



of, 280. 287. 

 Metaniorphism, between batholiths 



and laccoliths, intensity of, 12, 



13; temporal, 229; reactionary, 



229; thermal, 233. 

 Meteoric waters, hypothesis of, 229; 



lower limit, 241. 

 Metis alta, figure of, 558. 

 Midway formation of the Gulf 



states, 117, 120. 



Miller, L. II. , 31; cited, 224. 

 Mineralizing solutions and magma 



differentiation, 242. 

 Miocene, lowermost, 260. 

 Modiolus bakeri, 128; figure of, 162. 



directus, figure of, 514. 



gabbi, 458; figure of, 526. 



merriami, figure of, 162. 



ornatus, 264. 



stalderi, 182; figures of, 202. 

 Mohave beds, 279. 

 Mohave Desert area, 289. 

 Molengraaff, cited, 8, 9. 

 Mollusca, Fossil, New Species of 



from the Later Marine Neocene 



of California, 181. 

 Molluscan Species, New, from the 



Martinez Eocene of California, 



299. 



Molopophorus (?) howardi, 301; fig- 

 ures of, 304. 



Monterey group, formation of Els- 

 mere Canon, 203; Lower Neo- 

 cene, 395; relation to San Pablo 

 group, 398, 408, 412, 414. 



Monzonite of Wearv Flat, Veteran 

 Mine, Ely, Nevada, 310. 



Monzonite-porphyry, copper ores in, 

 310. 



Moran, R. B., 184, 205. 

 Morenci, 228, 229, 230. 

 Muir Station, California, 116. 

 Mulinia densata, 390, 398; figure of, 

 550. 



pabloensis, figures of, 550, 554. 

 Murex (Ocinebra) dalli, 501; figures 

 of, 564. 

 packardi, 501; figures of, 568. 

 seibyensis, 502; figures of, 564. 

 Mya (Cryptomya) ovalis, 479; figures 

 of, 550. 



dickersoni, 478; figures of, 556. 

 (Platydon) cancellatus, figure of, 

 ' 558'. 



Mylodon garmani, 319, 331; meas- 

 urements, of skull, 326, of den- 

 tition, 329. 

 harlani, 319, 320, 322, 330, 334; 

 measurements of, 326; figures of, 

 321, 323. 

 renidens, 331. 

 robustus, 322. 

 sodalis, 320. 

 suleidens, 331. 

 Mylodont Sloths of Rancho La Brea, 



Skull and Dentition of, 319. 

 Mytilus, cf. ascia, 265; figure of, 

 162. 



merriami, 455; figures of, 526. 

 (mytiloconcha) trampasensis, 457. 

 perrini, 456; figures of, 514. 

 trampasensis, figures of, 514. 



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