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Cook, A. M. (6157) 



collecting LODGEPOLE pine seed. Amer. Forestry 17 : 674-676. 1911. 



Cox, W. T. (6158) 



REFORESTATION ON THE NATIONAL FOREST B I PART I. COLLECTION OF SEED ; PART II. 



direct seeding. U. S. Dept. Agr., Forest Serv. Bull. 98, 57 pp., illus. 1911. 



Crocker, William. (6159) 



dormancy in hybrid seeds. Mem. N. Y. Hort. Soc. 3: 33-38, illus. 1927. 



(6160) 



HARVESTING, STORAGE AND STRATIFICATION OF SEEDS IN RELATION TO NURSERY 



practice. Florists' Rev. 65 (1684) : 43-46. 1930. 



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periodicity in tropical trees. Bot. Gaz. 62: 244-246. 1916. 



Dallyn, G. W. (6162) 



gathering tree seed from conifers. Canad. Forest and Outdoors 25 (9) : 

 537-538, illus. 1929. 



Dana, S. T., Adams, Bristow, Tillotson, C. R., and Zon, Raphael. (6163) 



seed production and how to study it: discussion. Soc. Amer. Foresters 

 Proc 7 : 117-130. 1912, 



Davis, O. H. (6164) 



GERMINATION AND EARLY GROWTH OF CORNUS FLORIDA, SAMBUOUS CANADENSIS, 



and berberis THUNBERGii. Bot. Gaz. 84: 225-263, illus. 1927. 

 Delavan, C. C. (6165) 



THE RELATION OF THE STORAGE OF THE SEEDS OF SOME OF THE OAKS AND HICK- 

 ORIES to their germination. Mich. Acad. Sci. Rept. 17 : 161-163. 1915. 



Douglas, R. (6166) 



NOTES ON THE LONGEVITY OF CONIFEROUS TREE-SEEDS. Gard. and Forest 1 : 



250. 1888. 



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white pine seeds every three years. Gard. and Forest 1 : 250. 1888. 



Duvel, J. W. T. (6168) 



vitality and germination of seeds. U. S. Dept. Agr., Bur. Plant Indus. 

 Bull. 58, 96 pp. 1904 



Eastman, R. E. (6169) 



care of the seed of red cedar, Forestry Quart. 9 : 173-174. 1911. 



Engelmann, George. (6170) 



ACORNS AND THEIR GERMINATION. Bot. GaZ. 5 1 71-72. 1880. 



Enoroth, O. (6171) 



the extent of spreading of spruce seed. Canad. Woodlands Rev. 1 (2) : 

 7-8, 24, illus. 1929. 



Farquhar, H. H. (6172) 



seed collection on a large scale. U. S. Dept. Agr. Yearbook 1912 : 433- 

 442, illus. 1913. 



Gevorkiantz, S. R. (6173) 



determination of forest seed quality. Jour. Forestry 26: 1043-1046. 



1928. 



Haasis, F. W. (6174) 



GERMINATIVE ENERGY OF LOTS OF CONIFEROUS SEED, AS RELATED TO INCUBATION 



temperature and to duration of incubation. Plant Physiol. 3 (4) : 365- 

 412, illus. 1928. 



Harshberger, J. W. (6175) 



a new method of germinating acorns for forest planting. Amer. For- 

 estry 22 : 687-688, illus. 1916. 



Herr, C. S. (6176) 



collecting cones for tree seed. N. H. Univ. Ext. Service, Ext. Circ 116, 

 4 pp., illus. 1930. 



