LIST OF LITERATURE 161 



De Rose, H. R., Eisenmenger, W. S. and Ritchie, W. S. (1938). The 

 comparative nutritive effects of copper, zinc, chromium and molyb- 

 denum. Bull. Mass. Agric. Exp. Sta. 1937, no. 347, pp. 18-19. 



Draize, J. H. and Beath, O. A. (1935). Observations on the pathology 

 of blind staggers and alkali disease. Amer. Vet. Med. Ass. J. 86 

 (N.S. 39), 753-63. 



Drake, M., Sieling, D. H. and Scarseth, G. D. (1941). Calcium-boron 

 ratio as an important factor in controlling boron starvation. 

 J. Amer. Soc. Agron. 33, 454-62. 



Dregne, H. E. and Powers, W. L. (1942). Boron fertilization of alfalfa 

 and other legumes in Oregon. J. Amer Soc. Agron. 34, 902-12. 



Dufrenoy, J. and Reed, H. S. (1934). Pathological effects of the 

 deficiency or excess of certain ions on the leaves of Citrus plants. 

 Ann. Agron. N.S. 4, 637-53. 



Dufrenoy, J. and Reed, H. S. (1942). Coacervates in physical and bio- 

 logical systems. Phytopathology, 32, 568—79. 



Dunlop, G. (1939). Mineral Deficiencies in Live Stock on British Pastures. 

 Glasgow: The Scottish Agric. Publ. Co. 



Dunlop, G., Innes, J. R. M., Shearer, G. D. and Wells, H. (1939). 

 'Swayback' studies in North Derbyshire. I. The feeding of copper 

 to pregnant ewes in the control of 'Swayback'. J. Comp. Path. 

 52, 259-65. 



Dunlop, G. and Wells, H. E. (1938). 'Warfa' ('Swayback') in lambs 

 in North Derbyshire and its prevention by adding copper supple- 

 ments to the diet of the ewes during gestation. Vet. Pec. 50, 

 1175-82. 



Dunne, T. C. (1938). 'Wither-tip' or 'Summer Dieback'. J. Agric. W. 

 Aust. 15 (2nd Ser.), 120-6. 



Eaton, F. M. (1935). Boron in soils and irrigation waters and its effect 

 on plants. Tech. Bull. U.S. Dep. Agric. no. 448. 



Eaton, S. V. (1940). Effects of boron deficiency and excess on plants. 

 Plant Physiol. 15, 95-107. 



Eden, A. (1939). The influence of varying copper intake on normal 

 blood copper of Northumbrian sheep. J. Comp. Path. 52, 249-57. 



Eden, A. (1941). Further observations on the blood copper of Northum- 

 brian sheep. J. Agric. Sci. 31, 186—93. 



Eden, A. and Green, H. H. (1940). Micro -determination of copper in 

 biological material. Biochem. J ..34, 1202-8. 



Eisler, B., Rosdahl, K. G. and Theorell, H. (1936). Uber die Mikro- 

 bestimmung des Kupfers mit Hilfe der lichtelektrischen Photo- 

 metric. Biochem. Z. 285, 76-7. 



Eltinge, E. T. (1936). Effect of boron deficiency upon the structure of 

 Zea mays. Plant Physiol. 11, 765-78. 



Eltinge, E. T. and Reed, H. S. (1940). The effect of zinc deficiency 

 upon the root of Lycopersicum esculentum. Amer. J. Bot. 27, 

 331-5. 



Elvehjem, C. A. (1935). The biological significance of copper and its 

 relation to iron metabolism. Physiol. Rev. 15, 471-507. 



