FOREST BOTANY 321 



Retan, G. A. (6354) 



charcoal as a means of solving some nursery pboblems. Forestry Quart. 

 13: 25-30, illus. 1915. 



(6355) 



effective fertilizers in nurseries. Forestry Quart. 12 : 34-36. 1914. 



(6356) 



nursery practice in Pennsylvania. Jour. Forestry 16: 761-769. 1918. 



Robertson, W. M. (6357) 



analysis of direct seeding methods. Jour. Forestry 24: 260-264. 1926. 



Rogers, E. C. (6358) 



INFLUENCE OF THE PEEIOD OF TRANSPLANTING WESTERN WHITE PINE SEEDLINGS 



upon their behavior in nursery and plantation. Jour. Agr. Research 

 22: 33^6, illus. 1921. 



Ross, N. M. (6359) 



nursery practice under prairie conditions. Forestry Chron. 5 (1) : 38-44. 

 1929. 



Sawyer, L. E. (6360) 



nursery practice in Georgia. Jour. Forestry 27 : 428-429. 1929. 



Scheffer, T. C. (6361) 



steam sterilization of coniferous seed beds. Wash. [State] Univ. Forest 

 Club Quart. 7: 14-16, illus. 1928. 



(6362) 



STERILIZATION OF CONIFEROUS SEEDBEDS WITH LOW-PRESSURE STEAM. J0U1\ 



Forestry 28 : 42-49, illus. 1930. 

 Show, S. B. (6363) 



EFFECT OF DEPTH OF COVERING SEED UPON THE GERMINATION AND QUALITY OF 



stock. Jour. Forestry 15 : 619-623. 1917. 

 (6364) 



FOREST NURSERY AND PLANTING PRACTICE IN CALIFORNIA PINE REGION. U. S. 



Dept. Agr. Circ. 92, 75 pp., illus. 1930. 

 Skeels, Dorr. (6365) 



FORESTRY SCHOOL NURSERY A STATE BENEFIT. Mont. Univ. Forestry Club, 



Forestry Kaimin 1927: 33, 90-101. 1927. 



Smith, Arthur. (6366) 



forest tree nurseries for private estates. Gard. Chron. Amer. 22 (11-12) : 

 271-272. 1918. 



Spring, S. N. (6367) 



notes on white pine four- year transplants. Jour. Forestry 15: 761-762. 

 1917. 



Sterling, E. A. (6368) 



HOW TO GROW YOUNG TREES FOR FOREST PLANTING. U. S. Dept. Agr. Yearbook 



1905 : 183-192, illus. 1906. 

 Sudworth, G. B. (6369) 



FOREST NURSERY: COLLECTION OF TREE SEEDS AND PROPAGATION OF SEEDLINGS. 



U. S. Dept. Agr., Div. Forestry Bull. 29, 63 pp., illus. 1900. 

 Ttllotson, C. R. (6370) 



NURSERY PRACTICE ON THE NATIONAL FORESTS. U. S. Dept. Agr. Bull. 479, 



86 pp., illus. 1917. 



Toumey, J. W. (6371) 



the yale transplanting board. Forestry Quart. 9 : 539^543, illus. 1911. 



and Neethling, E. J. (6372) 



SOME EFFECTS OF COVER OVER CONIFEROUS SEEDBEDS IN SOUTHERN NEW ENGLAND. 



Yale Univ. School Forestry Bull. 9, 39 pp., illus. New Haven. 1923. 



Troop, J. (6373) 



close root-pruning for trees. Gard. and Forest 10 (467) : 46. 1897. 

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