FORESTRY 21 



LUMBER Continued. 



Strength values for structural timbers. 1912. 8 pages. Paper, 5c. 



A 13.4 : 189 

 Tests of structural timbers. 1912. 123 pages, illus. maps. Paper, 20c. 



A 13.3 : 108 



Timber physics, pt. 1, preliminary report. 1892. 57 pages, illus. 4 

 Paper, 20c. A 13.3: 6 



CONTENTS. Need of investigation. Scope and historical development of science 

 of timber physics. Organization and methods of timber examinations in Division 

 of Forestry. 



Timber physics, pt. 2, progress report. 1893. 92 pages, illus. 4 Paper, 

 25c. A 13.3 : 8 



CONTENTS. Results of investigations on long-leaf pine. 

 Timber rot caused by Lenzites sepiaria. 1911. 46 pages, illus. Paper, 



lOc. A 19.3 : 214 



Timber supply of United States 



1907. 16 pages, illus. Paper, 5c. A 13.4 : 97 



1909. 24 pages, illus. Paper, 5c. A 13.4: 166 



See also, in this list, headings Fire-killed timber National forests Wood- 

 Wood preservation. 



LUQUILLO FOREST RESERVE, Porto Rico. 1905. 52 pages, illus. Paper, lOc. 



A 13.3 : 54 



MAHOGANY. Colombian mahogany, Cariniana pyriformis, its characteristics 

 and its use as substitute for true mahogany, Swietenia mahagoni ; with 

 description of botanical characters of Cariniana pyriformis. 1911. 16 

 pages, illus. Paper, 5c. A 13.4 : 185 



MAINE. Forests of Maine. (In Proceedings of conference of governors in 

 White House, 1908, pages 362 to 367.) Cloth, 75c. Pr 26.2 : G 74 2 



MANTI NATIONAL FOREST. Grazing and floods, study of conditions in 

 Manti national forest, Utah. 1911. 16 pages, illus., map. Paper, lOc. 



A 13.3 : 91 

 MAPLE. 



Broadleaf maple, Acer macrophyllum Pursh. 1912. 4 pages. Paper, 5c. 



A 13.12 : 51 

 Forest planting leaflet: Silver maple, Acer saccharinum. 1907. 3 pages. 



Paper, 5c. A 13.4 : 76 



Forest planting leaflet: Sugar maple, Acer saccharinum. 1907. 4 pages. 



Paper, 5c. A 13.4 : 95 



See also, in this list, headings Lumber Wood Wood preservation. 



MAPLE SUGAR industry, with discussion of Adulterations of maple products. 

 1905. '56 pages, illus. Paper, 5c. A 13.3 : 59 



MAPS. 



Forest atlas, geographic distribution of North American trees : pt. 1. Pines. 



1913. [4] pages, 36 maps, large 4 Paper, $1.00. A 13.17: 1 



Natural forest regions of North America and their characteristic tree 



growth. Scale 5 long.=1.6 in. 1910. 18.1X13.7 in. 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. 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.^1 in. [2d edition.] 1908. 4 sheets, each about 29.5X40.8 in. 



Paper, 50c. A 13.13 : N 21 4 



INSETS. 



Alaska, with inset, Aleutian Islands. Scale 250 in. =-2.4 in. 14.6X17 and 



2.4X7.5 in. 



Guam or Cuajan Islands. 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. 9.1X9.4 and 



2.5X4 in. 



NOTE. In ordering publications from this List use the words of the title 

 as far as the first period, and all the composite number which follows the price. 



