396 PLANT PHYSIOLOGY 



Garner, W., and Allard, H— Effect of relative length of day and night on 



growth and reproduction. J. Ag. Res., 18:553, 1920. 

 Knight, R. — The carbohydrate-nitrogen ratio. Sci. Prog., 19:34, 1924. 

 Kraus, E. J. — Modification of vegetative and reproductive functions under 



some varying conditions of metabolism. Am. J. Bot., 7:409, 1920. 

 Soil nutrients in relation to vegetation and reproduction. Am. Jour. 



Bot, 12:510, 1925. 

 Kraus, E. J., and Kraybill, H. — Vegetation and reproduction with special 



reference to the tomato. Oreg. Ag. Exp. Sta. Bui. No. 149, 1918. 

 McClelland, T. B. — Studies of the photoperiodism of some economic plants. 



Jour. Agric. Res., 37:603, 1928. 

 Morinaga, T— Favorable effect of reduced oxygen supply upon the germina- 

 tion of certain seeds. Am. J. Bot., 13:159, 1926. 

 Murneek, A. E. — Effects of correlation between vegetative and reproductive 



functions in the tomato. Plant Physiol., 1 :3, 1926. 

 Redington, G— Effect of the duration of light upon the growth and develop- 

 ment of the plant. Biol. Rev., 4:180, 1929. 

 Reid, M. E. — Growth of tomato cuttings in relation to stored carbohydrates 



and nitrogenous compounds. Am. J. Bot., 13:548, 1926. 

 Effect of variations in the amounts of available carbon and nitrogen 



on the growth of wheat seedlings. Am. Jour. Bot., 16:770, 1929. 

 Schmidt, D— The effect of the weight of the seed upon the growth of the 



plant. N. J. Agric. Exp. Sta. Bui. No. 404, 1924. 

 Shull, C. A., and Davis, W. B. — Delayed germination and catalase activity 



in Xanthium. Bot. Gaz., 75:268, 1923. 

 Stiles, W— Flower and fruit formation. Sci. Prog., 17:216, 1922. 



Germination. Sci. Prog., 22:416, 1928. 



Tincker, M. A. H. — The effect of length of day upon the growth and chemical 



composition of the tissues of certain economic plants. Ann. Bot., 42:101, 



1928. 

 West, C— Dormancy and after-ripening. Sci. Prog., 15:34, 1920 and 17:371, 



1923. 

 Zimmerman, P. W. — Vegetative plant propagation with special reference 

 to cuttings. Proc. Amer. Soc. Hort. Sci., 22:223, 1925. 



