FORESTS. 



Instructions for making forest surveys and maps. Revised Dec. 15, 1911. 

 85 pages, illus. 16 (Forest Service.) Cloth, 20c. A 13.2 :M 32" 



Natural forest regions of North America and their characteristic tree 

 growth. Scale 10 long.=1.2 in. 1911. 18X14.2 in. (Forest Service.) 

 Paper, 15c. A 13.13 : N 81 



Natural forest regions of South America and their characteristic tree 

 growth. Scale 10 long.=1.2 in. 1911. 18X14.2 in. (Forest Service.) 

 Paper, 15c. A 13.13 : So 8 



National forests [map, with insets] base map compiled by General Land 



Office, reissued, with national forests to date, by Forest Service. Scale 



37 m.=l in. Published Mar. 17, 1908. 4 sheets, each about 29.5X40.8 in. 



Paper, 50c. A 13.13 :N 21* 



INSETS : 



Alaska, with inset Aleutian Islands. Scale 250 m.=2.4 in. 14.6 X 17 and 



2.4X7.5 in. 



Guam or Cuajan Island. Approximate scale 10 m.=l in. 4.3X3.2 in. 

 Hawaiian Islands. Approximate scale 100 m.=1.3 in. 5.8X9.1 in. 

 Panama Canal, scale 10 m.=2 in.; with inset, Isthmus of Panama. 9.1X94 and 



2.5X4 in. 



Philippine Islands. Approximate scale 140 m.=1.7 in. 14.6X99 in 

 Porto Rico. Scale 30 m.=2 in. 5.8X12.5 in. 



Tutuila Group of Samoan Islands : Tutuila Isl., scale 5 m.=1.6 in. ; Rose I scale 

 5 m.=0.3 in. ; Manua [Islands], scale 5 m.=1.6 in. 5.4X8.5, 3.7X6.9, 2.5X1 6 

 and 2.9X5.1 in. 



NOTE. This edition shows the area covered by the original forests. 



Same. Edition of May 1, 1910. Paper, 50c. A 13.13 : N 21* 



NOTE. This edition shows the present and proposed forest reservations, notably 

 the Appalachian Reserve, also Reclamation Service irrigation projects, private irri- 

 gated areas, canals and proposed waterways, overflowed lands of lower Mississippi 

 River, principal watersheds, lines of equal precipitation, and Indian reservations. 



National forests, with transportation routes and supervisors' headquarters, 

 scale 100 m.=l.l in. ; with insets, Alaska, scale 300 m.=l.l in. ; Porto 

 Rico, scale 40 m.=l in. 1911. 20.4X31.3. 5.1X0.6, and 2.3X3.9 in. 

 (Forest Service.) Paper, 15c. A 13.13 : N 21V911 



See also, in this list, heading United States. 



GEOLOGIC ATLAS OF THE UNITED STATES. 



Under the plan adopted for the preparation of a geologic map of the United 

 States the entire area is divided into small quadrangles, bounded by cer- 

 tain meridians and parallels, and these quadrangles, which number sev- 

 eral thousand, are separately surveyed and mapped. The unit of survey 

 is also the unit of publication, and the maps and description of each 

 quadrangle are issued in the form of a folio. When all the folios are 

 completed they will constitute a geologic atlas of the United States. 



A folio is designated by the name of a principal town or of a prominent 

 natural feature within the quadrangle. It comprises topographic, geo- 

 logic, economic, and structural maps of the quadrangle, and occasionally 

 other illustrations, together with a general description. Each folio is 

 about 20.6X17.6 inches in size. These can be obtained only from the 

 Geological Survey, Washington, D. C. 



GEOLOGY. See, in this list, heading North America. 



GRAND CANYON OF COLORADO. Atlas to accompany Tertiary history of 

 Grand Canyon district. 1882. 24 sheets, f (Geological Monograph 2.) 

 Cloth, $8.00. I 19.9 : 2 2 



See also, in this list, heading Arizona. 



GREAT LAKES. See. in this list, heading Northern and Northwestern Lakes 

 Survey. 



GUIANA and Venezuela cartography; by P. L. Phillips. Pages 681 to 776. 

 [From American Historical Association Report, 1897.] Paper, lOc. 



SI 4.1" : P 54 3 



HAWAII, Map of Territory of, scale 12 m.=l in. ; with inset, Hawaiian Archi- 

 pelago, scale 152 m.=l in. 1901. 22X33.5 and 7.7X12.7 in. (General 

 Land Office. ) Paper, 25c. I 21.13 : H 31 1 



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