906 



Yearbook^ of Agriculture 1949 



Spaulding, Perley: Investigations of the 

 White-Pine Blister Rust, U. S. D. A. 

 Bulletin 957, 100 pages. 1922. 



Spaulding, Perley: Longevity of the 

 Teliospores and Accompanying Ure do- 

 spores of Cronartium Ribicola Fischer 

 in 1923, Journal of Agricultural Re- 

 search, volume 31, pages 901-916. No- 

 vember 15, 1925. 



Spaulding, Perley: White Pine Blister 

 Rust: A Comparison of European with 

 North American Conditions, U. S. D. A. 

 Technical Bulletin 87, 58 pages. 1929. 



Spaulding, Perley, and Rathbun-Gravatt, 

 A.: The Influence of Physical Factors 

 on the Viability of Sporidia of Cronar- 

 tium Ribicola Fischer, Journal of Agri- 

 cultural Research, volume 33, pages 397- 

 433. September 1, 1926. 



PROGRESS, BUT STILL A PROBLEM 



(Page 477) 



Holbrook, Stewart Hall: Burning an Em- 

 pire, 229 pages, The Macmillan Com- 

 pany, New York. 1943. 



BAD BUSINESS; YOUR BUSINESS 

 (Page 479) 



Chapman, H. H.: Prescribed Burning 

 Versus Public Forest Fire Services, Jour- 

 nal of Forestry, volume 45, pages 804- 

 808. November 1947. 



Craddock, George W.: Salt Lake City 

 Flood, 1945, Proceedings of the Utah 

 Academy of Sciences, Arts, and Letters, 

 volume 23, pages 51-61. 1945-1946. 



Forest Fires and How You Can Prevent 

 Them, 11 pages, U. S. Forest Service. 

 1945. 



Forest Fire Statistics, 1936-1945, U. S. 

 Forest Service. 



Guthrie, John D. : Great Forest Fires of 

 America, 9 pages, U. S. Forest Service. 

 1936. 



Hall, A. G. : Four Flaming Days, Ameri- 

 can Forests, volume 53, pages 540-542, 

 569-570. December 1947. 



Love, R. M., and Jones, Burle J.: 7m- 

 proving California Brush Ranges, Cali- 

 fornia Agricultural Experiment Station 

 Circular 371, 31 pages. 1947. 



Talbot, M. W., and Kraebel, C. J.: Re- 

 lation of Forest Lands to Agriculture, 

 Industry, and People in Southern Cali- 

 fornia, U. S. Forest Service, California 

 Forest and Range Experiment Station, 

 Forest Research Note 39, 5 pages. 1944. 



Wartime Forest Fire Prevention Program, 

 10 pages, U. S. Forest Service. 1945. 



FIRE AS TOOL IN PINES 



(Page 517) 



Siggers, Paul V. : The Brown Spot Needle 

 Blight of Pine Seedlings, U. S. D. A. 

 Technical Bulletin 870, 36 pages. 1944. 



TRAIL RIDING IN WILDERNESS 



(Page 537) 



Aircraft Use in Wilderness Areas, U. S. 

 National Research Council, Division of 

 Biology and Agriculture, Bimonthly Re- 

 port, volume 5, pages 38-55. 1947. 



Allen, Shirley W.: Wilderness Trails by 

 Canoe, American Forests, volume 47, 

 pages 416-419, 441. September 1941. 



Kneipp, L. F.: Enriching and Stimulat- 

 ing Solitude, Living Wilderness, volume 

 3, number 3, page 4. December 1937. 



Lord, Russell, editor: Forest Outings, 311 

 pages, U. S. Forest Service. 1940. 



The Pioneer Trail Riders, American Forests, 

 volume 39, pages 401-404, 424. Septem- 

 ber 1933. 



TREASURES OF THE NATION 



(Page 544) 



A Study of the Park and Recreation Prob- 

 lem of the United States, 279 pages, 

 U. S. National Park Service. 1941. 



Butcher, Devereaux: Exploring our Na- 

 tional Parks and Monuments, 160 pages, 

 Oxford University Press, New York. 

 1947. 



Glimpses of Our National Parks, 107 pages, 

 U. S. National Park Service. 1941. 



James, Harlean : Romance of the National 

 Parks, 240 pages, The Macmillan Com- 

 pany, New York. 1939. 



Merriam, John C. : Parks' National and 

 State, Published Papers and Addresses 

 of John Campbell Merriam, volume 4, 

 pages 2256-2264, Carnegie Institution, 

 Washington, D. C. 1938. 



Municipal and County Parks in the United 

 States, 173 pages, National Recreation 

 Association, New York. 1940. 



Portfolio on the National Park and Monu- 

 ment System, 4 volumes, American 

 Planning and Civic Association, Wash- 

 ington, D. C. 1938. 



The National Parks Portfolio, 274 pages, 

 U. S. National Park Service. 1931. 



1946 Yearbook, Park and Recreation Prog- 

 ress, 122 pages, National Conference on 

 State Parks, Washington, D. C. 



WILDLIFE IN SMALL WOODLAND 



(Page 561) 



Dambach, Charles A.: A Ten-Year Eco- 

 logical Study of Adjoining Grazed and 

 Ungrazed Woodlands in Northeastern 

 Ohio, Ecological Monographs, volume 

 14, pages 255-270. July 1944. 



Graham, Edward H. : The Land and 

 Wildlife, 232 pages, Oxford University 

 Press, New York. 1947. 



Hamilton, W. J., Jr., and Cook, David B.: 

 Small Mammals and the Forest, Journal 

 of Forestry, volume 38, pages 468-473. 

 June 1940. 





