NELSON, ARTHUR L. (See Wygant and Nelson. 

 1949) 



NICHOL, A. A. 1952. The natural vegetation 

 of Arizona. Ariz. Agr. Expt. Sta. Tech. 

 Bui. 127. (Revision of Tech. Bui. 68, 1943.) 

 Tucson: Univ. Ariz. 



Discusses distribution of Engelmann spruce. 



NOTESTEIN, N. B. (See Bates, Notestein, and 

 Keplinger. 1914) 



NUTTALL, THOMAS. (See Michaux and 

 Nuttall. 1854) 



OLSON, D. S. 1930. Growing trees for forest 

 planting in Montana and Idaho. U.S. Dept. 

 Agr. Cir. 120, 91 pp. 



OLSON, D. S. 1932. Germinative capacity of 

 seed produced from young trees. Jour. 

 Forestry 30: 871. 



Discusses Engelmann spruce which bear 

 cones at 16 years. 



OLSON, D. S. 1959. Identification of coniferous 

 seedlings in the northern Rocky Mountains. 

 Univ. Idaho Forest, Wildlife, and Range Expt. 

 Sta. Res. Note 15, 2 pp. 



OLSON, D. S. , and GEORGE R. FAHNESTOCK. 



1955. Logging slash: A study of the problem 



in Inland Empire Forests. Univ. Idaho Forest, ■ 

 Wildlife, and Range Expt. Sta. Bui. 1, 52 pp. 



OOSTING, HENRY J. , and JOHN F. REED. 

 1952. Virgin spruce-fir of the Medicine Bow 

 Mountains, Wyoming. Ecol. Monog. 22: 66-70. 



Gives quantitative phytosociological data. 



OSTMARK, H. EUGENE. 1957. Forest insect 

 conditions in the central Rocky Mountains, 



1956. U.S. Forest Serv., Rocky Mountain 

 Forest and Range Expt. Sta. Paper 27, 14 pp. 



OSTMARK, H. EUGENE. 1957. The life history 

 of Coeloides dendroctoni Cush., a braconid 

 parasite of the Engelmann spruce beetle. 

 Jour. Colo.-Wyo. Acad. Sci. 4: 48. 



OSTMARK, H. EUGENE, and B. H. WILFORD. 

 1956. Forest insect conditions in the central 

 Rocky Mountains , 1955. U.S. Forest Serv., 

 Rocky Mountain Forest and Range Expt. Sta. 

 Paper 22, 13 pp. 



OSTMARK, H. EUGENE. (See Landgraf and 

 Ostmark. 1958) 



OVERHOLTS, L. 0. 1919. Some Colorado 

 fungi. Mycologia 11: 245-258. 



Lists fungi species of conifer forests domi- 

 nated by Engelmann spruce . 



OVERHOLTS, L. O. 1930. Mycological notes 

 for 1928-1929. Mycologia 22: 232-246. 



Describes Phlebia me Ilea on dead Engelmann 

 spruce in Colorado. 



PADDOCK, MARK W. 1953. Comparison of 

 wind in four climax areas in Boulder County, 

 Colorado. Jour. Colo. -Wyo. Acad. Sci. 4(5): 

 40-41. (Abstract.) 



PADDOCK, MARK W. 1960. Some character- 

 istics of air temperature in four adjacent 

 climax regions of the Colorado Front Range. 

 Jour. Colo.-Wyo. Acad. Sci. 5(1): 31. 

 (Abstract.) 



PADY, S. M. 1940. Preliminary observations 

 on the aecial hosts of Melampsorella. Kansas 

 Acad. Sci. Trans. 43: 147-151. 



PADY, S. M. 1941. Further notes on the 

 witches' brooms and the substomatal pycnia 

 of Melampsorella . Kansas Acad. Sci. "Trans . 

 44: 190-201. 



PADY, S. M. 1942. Distribution patterns in 

 Melampsorella in the national forests and 

 parks of the western states . Mycologia 34: 

 606-627. 



PARKER, JOHNSON. 1951. Moisture retention 

 in leaves of conifers of the northern Rocky 

 Mountains. Bot. Gaz. 113: 210-216. 



PARKER, JOHNSON. 1952. Environment and 

 forest distribution in the Palouse Range in 

 northern Idaho. Ecology 33: 451-461. 



PATERSON, D. N. 1958. Some observations of 

 the virgin spruce-balsam forest in the British 

 Columbia interior, with thoughts on refores- 

 tation in Great Britain. Emp. Forest Rev. 

 37: 399-407. 



Discusses ecology of forests. 



PATTEN, D. T. 1963. Vegetational pattern in 

 relation to environments in the Madison 

 Range, Montana. Ecol. Monog. 33: 375-406. 



PATTEN, D. T. 1963. (See Supplement, p. 37) 



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