PROPAGATION OF TREES AND SHRUBS 45 



71. Markham, Ernest. Clematis. London. 1935. 



72. McElwee, E. W. Plant hormones in the South. Amer. Nurseryman 



67:6:12. 1938. 

 72,. Metcalfe, R. C. Plants difficult to propagate by means of cuttings. 

 Card. Chron. 103:2686:433. 1938. 



74. Mirov, N. T. Vegetative propagation of white pine as a possible 



method of blister rust control. Jour. Forestry 36:807-808. 1938. 



75. Myers, M. C, Bowden, Roy A., and Hardisty, F. E. Stimulation 



of kudzu cuttings. Science 88:2277:167. 1938. 



76. Nearing, G. G. Holly trees from cuttings. Horticulture 15:316. 



1937. 



77 and Connors, Charles H. Rhododendrons from 



cuttings. N. J. Agr. Expt. Sta. Bui. 666, 23 pp. 1939. 



78. Nordine, Charles. Hybrid lilacs. Proc. Ann. Meet. Amer. Plant 



Prop. Assoc. July 15, 1930:47-48. 1930. 



79. Oliver, R. \V. Preliminary tests with plant hormones in the root- 



ing of greenwood cuttings. Sci. Agr. 18:379-387. 1938. 



80. Osborn, A. Shrubs and Trees for the Garden. London and Mel- 



bourne. 1933. 



81. Pearse, H. L. Experiments with growth controlling substances. 



II. Response of fruit tree cuttings to treatment with synthetic 

 root-forming substances. East Mailing [Kent] Res. Sta. Ann. Rpt. 

 26 (1938):157-166. 1939. 



82 and Garner, R. J. A note on the use of a-naphtha- 



lene acetic acid for rooting soft-wood cuttings of fruit tree stocks. 

 Jour. Pomol. and Hort. Sci. 15:248-251. 1937. 



83. Poesch, G. H. EfTect of growth substances on the rooting of woody 



ornamental plants. Ohio Agr. Expt. Sta. Bimo. Bui. 191 :56-62. 

 1938. 



84. Rehder, Alfred. Manual of Cultivated Trees and Shrubs Hardy in 



North America. Ed. 2. New York. 1940. 



85. Robbins, P. W. Propagation of trees and shrubs for game food. 



Mich. Agr. Expt. Sta. Quart. Bui. 18:1:35-37. 1935. 



86. Roberts, James L., and Roberts, Elizabeth. Auxin production by 



soil micro-organisms. Soil Sci. 48:135-139. 1939. 



87. Scholz, J. Influence of indole-3-acetic acid on rooting of summer 



cuttings of some ornamental trees and shrubs. (Transl. title.) 

 (English summary.) Sbornik Ceskoslov. Akad. Zemedel. 12:648- 

 659. 1937. 



88. Skinner, Henry T. Rooting response of azaleas and other ericaceous 



plants to auxin treatment. Proc. Amer. Soc. Hort. 3ci. 35 (1937): 

 830-838. 1938. /. . vf\^ ^'>i "' , <■'■ 



89 A new propagation method for hybrid Rhododen- 

 drons. Jour. N. Y. Bot. Gard. 40:83-89. 1939. 



90 Further observations on the propagation of Rho- 

 dodendrons and azaleas by stem and leaf-bud cuttings. Prop. 

 Amer. Soc. Hort. Sci. 2,7 (1939) :1013-1018. 1940./ ? .' i ' ■ '^ ' 



91. Snow, Albert G., Jr. Use of indolebutyric acid to stimulate the 

 rooting of dormant aspen cuttings. Jour. Forestry 36:582-587. 

 1938 



92 Chemically-induced rooting of sugar maple cut- 

 tings. U. S. Dept. Agr. Northeastern Forest Expt. Sta. Tech. 

 Note No. 27. 1939. 



