APPENDIX. 
IIH. STRATIFIED ROCKS—Continued. 
No. Name. Locality. 
164 | Clay concretions Colorado desert 
AGG |. do do 
166 | Clay concretions, flat and thin do 
167 | Clay concretions, ellipsoidal do 
168 | Clay concretions, round, showing lines of stratification do 
169 | Sandstone concretion, spherical do 
170 | Sandstone concretion, formed of several flattened spheres do 
171 | Sandstone concretion do 
172 | Sandstone concretion, long flattened cylinder, showing lines of 
stratification do 
173 | Sandstone concretion, long and elliptical, containing small concre- : 
tions of peroxide of iron lorado desert M 
. 174 | Cylindrical concretion do TIR 
175 | Concretion of peroxide of iron do = 
176 | Hollow concretion of peroxide of iron, showing lines of stratification do - 
177 | Pebbles of agate, jasper, and carnelian do ۹ 
178 | Chalcedony Yort Yuma RN 
179 | Black polished pebble Desert north of Pilot Knob .......-------- 
. 180 | Two polished pebbl do do — 
181 | Selenite Desert, Carrizo creek.--.----------------- 
182 | Sand..... From the Sand-Hills, between Cook's Well 
and the Alamo, Colorado desert---------- 
183 | Sand, from the drift at the deep well Deep Well, Colorado desert .-..----------- 
. 184 | Sandstone, pink color Mokelumne Blase aaa ana aa 
.185 | White sandstone PR Ea S 
.186 | Gray sandstone Bodega Bay--------.=-4#>4==2--- ==ض ت‎ 
„187 | Argillaceous sandstone, green and soft; fossiliferous Volcano Ridge, California... تچ‎ ----------- 
188 | Fine clay, from the auriferous drift Georgetown, California. .----------------~ 
189 | Clay containing volcanic ash and the impression of a leaf, auriferous 
drift TS dnm Bd ae e Y a 
190 | Red and drab clay, auriferous drift Cement Hill, Georgetown, California. ------ 
191 | Sandstone, containing casts of tertiary fossils Ocoya Creek, California... ..--.---------777 
192 | Rock, containing calcareous polythalamia Monterey ais a اه دا سا‎ 
193 | Rock perforated by Petricola cylindracea > A te ee 
194 | Sandstone | Bay of Panama... .... un 
195 do da. deacain ac e RO RE d e ee 
(462) do Bay of Panama, near the market ---.------ 
(463) do x Barbacoas, Isthmus...-------------777777 
IV. MINERALS AND ORES. 
Sulphuret of antimony Near San Amedio Pass.--------«------77777 
Sulphuret of antimony with quartz UN ۲ i rs same xis nn 
Vein-stone of the antimony ore, containing sulphuret of iron-....-- Antimony e enasirennenap ninan 
| Fragment of a small vein adjoining the vein of antimony ESA OPUS d 
Hydrous peroxide of iron Mariposa county--------------- 7” 
do do du c ee A Besen 
Magnetic iron ore Cañada de las Uvas.------------ 7 
| Magnetic iron ore with carbonate of lime do TEN 
