184 A Bibliography of the Geology, etc., of California. 



Folio No. 51, Big Trees. Topographic sheet, scale 1 : 125,000 ; 



historical geology sheet; economic geology sheet; special 



illustrations. 



This folio comprises the territory between the meridians 120 deg. 

 and 120 deg. 30 min. west longitude and the parallels 38 deg. and 

 38 deg. 30 min. north latitude. 33^4 miles long and 27 14 miles 

 wide, containing about 938 square miles. Portions of Amador, 

 Alpine, Calaveras, and Tuolumne counties. 



Folio No. 63, Mother Lode. Topographic sheet, scale 



1 : 63,360 ; claim sheets ; economic geology sheets Nos. 1 



and 2; structural sections sheet. 



The folio comprises a narrow belt of country extending in nearly 

 northwest and southeast direction along the western foothill region 

 of the Sierra Nevada. Length, 70 miles ; width, 6% miles. Por- 

 tions of Amador, Calaveras and Tuolumne counties, and a smaller 

 part of Mariposa County. 



Folio No. 66, Colfax. Topographic sheet, scale 1 : 125,000 ; 

 historical geology sheet ; economic geology sheet ; struc- 

 tural section sheet. 



This folio includes the territory between 120 deg. 30 min. and 121 

 deg. west longitude and 39 deg. and 39 deg. 30 min. north latitude. 

 Area, 34.5 miles long and nearly 27 miles wide, containing 925 

 square miles. It embraces large portions of Sierra, Nevada, and 

 Placer counties as well as a little of El Dorado County. 



The following is a list of topographic maps of California : 



Alturas, lat. 41 deg., long. 120 deg. Scale, 1:250.000. (Lassen 

 and Modoc counties.) 



Anaheim, lat. 33 deg. 45 min., long. 117 deg. 45 min. Scale, 

 1:62,500. (Los Angeles, Orange, and San Bernardino counties.) 



Arroyo Grande, lat. 35 deg. 15 min., long. 120 deg. 30 min. 

 Scale, 1:62,500. (San Luis Obispo County.) 



Banner Hill, lat. 39 deg. 17 min., long. 120 deg. 5 min. Scale, 

 1:14,400. (Nevada County.) 



Bidwell Bar, lat. 39 deg.' 30 min., long. 121 deg. Scale, 1 : 125,000. 

 (Butte, Plumas, and Yuba counties.) 



Big Trees, lat. 38 deg., long. 120 deg. Scale, 1 : 125,000. 

 (Alpine, Amador, Calaveras, and Tuolumne counties.) 



Calabasas, lat. 34 deg., long. 118 deg. 30 min. Scale, 1 : 62,500. 

 (Ventura, Los Angeles, and San Bernardino counties.) 



Camp Mohave (Ariz., Nev. and Cal,), lat. 35 deg., long. 114 deg. 

 Scale, 1:250,000. (San Bernardino County.) 



Capistrano, lat. 33 deg., long. 117 deg. 30 min. (Orange and 

 San Diego counties.) 



Cayucos, lat. 35 deg. 30 min., long. 120 deg. 45 min. Scale, 

 1:62,500. (San Luis Obispo County.) 



Chico, lat. 39 deg. 30 min., long. 121 deg. 30 min. Scale, 

 1:125,000. (Butte and Tehama counties.) 



