218 INDEX OF AUTHORS. 
PAGE. 
Lockineton, W. N.—List of Echinid# now in the Collection of the California Acad- 
OMY (Of HClEN CEA s {cic spe keeystosinie a lsisiors' oa Sim erentertatale Bele rmnbie cea tate aloe ati sieiete tere 152 
Lowry, T. J.—The Protracting Sextant—A New Instrument for Hydrographic Survey- 
1) Mee R DoCS DODRCROT 65.0713 00 JOC GHOROSOaG! ALG Oo dat Hobe Ade SOs or ona aaUoS 5 
Hydrographic Suryeyin ge ciceriiat ase cele ce «/a: aevalo assets eetje is ealasetaieieteleieeons seman tate 81 
A New Method of Determining Positions of the Sounding Boat. Application 
of the Two-Point Problem to Hydrographic Surveying.................. 167 
STEARNS, ROBERT E. C.—On the Vitality of Certain Land Mollusks.................... 185 
Remarks on the Death of Hon. Benjamin Parke Avery ...... ................., 203 
SPECIAL CoMMITTEE—Report and Memorial on the Continuance of the State Geological 
SURVEY aia ssreic 5 apseeetcreie ass craic alars.a“s sious-ols(oinsea aivbe.ey Sipiejeicle ia veleemein ieiatelera tetas 206 
TRUSTEES OF ACADEMY—In the matter of the Lick Estate.... ............. cece essen eee 176 
Winstow, Dr. C. F.—Verbal Remarks on Fossil Mammalian Remains in San Fran- 
CISCO ie ecole eielwieretaletcre’erele «'n's.s clereintotannatec te crete atelte sistovstetelena ms telcts tenants eee 141 
