INDEX TO AMERICAN BOTANICAL LITERATURE 89 
Giddings, N. J. The occurrence of plant diseases in 1907. Vermont 
Agric. Exp. Sta. Bull. 136: 188-190. Je 1908. 
Green, W. J., & Secrest, E. Forest conditions in Ohio. Ohio Agric. 
Exp. Sta. Bull. 204: 237-277. Je 1g09. _ [Illust.] 
Halsted, B. D. Breeding sweet corn — codperative tests. New Jersey 
Agric. Exp. Sta. Bull. 192: 1-30. p/. r-g +f. 7-8. 2 Mr 1906. 
Halsted, B. D. Forest trees of New Jersey. New Jersey Agric. Exp. 
Sta. Bull. 202: 1-52. f. 7-25. 25 Ap 1907. 
Halsted, B. D., & Owen, E. J. Report of the botanist. Rep. New 
Jersey Agric. Exp. Sta. 27: 369-514. pl. 1-25. 1907. 
Halsted, B. D., Owen, E. J., & Shaw, J. K. Report of the botanist. 
Rep. New Jersey Agric. Exp. Sta. 26: 423-525. p/. 7-17. 1906. 
Halsted, B. D., Owen, E. J., & Shore, N. D. Report of the botanist. 
Rep. New Jersey Agric. Exp. Sta. 28: 257-386. p/. 7-27. 1908. 
Halsted, B. D., Owen, E. J., & Shore, N. D. Report of the botanist. 
Rep. New Jersey Agric. Exp. Sta. 29: 179-301. A/. 1-73. 1909. 
Hare, R. F., & Griffiths, D. The tunaas food forman. New Mexico 
Agric. Exp. Sta. Bull. 64: 1-88. p/. 7-7. Ap 1907. 
>» Hartwell, B. L. Effect of sodium on plant composition. Rep. Rhode 
Island Agric. Exp. Sta. 21: 235-242. 1908. 
» Hartwell, B. L., & Pember, F. R. Sodium as a partial substitute for 
potassium. Rep. Rhode Island Agric. Exp. Sta. 21: 243-285. 
Jit E2665; 
» Hartwell, B. L., & Pember, F. R. The relation between the effects 
of liming, and of nutrient solutions containing different amounts of 
acid, upon the growth of certain cereals. Rep. Rhode Island Agric. 
Exp. Sta. 20: 358-380. f. 7, 2. 1908. 
Hartwell, B. L., & Pember, F. R. The relative toxicity of ferrous 
sulfate to bariey and rye seedlings. Rep. Rhode Island Agric. Exp. 
Sta. 21: 286-294. 1908. 
» Hartwell, B. L., Wheeler, H. J., & Pember, F. R. The effect of the 
“addition of sodium to deficient amounts of potassium, upon the growth 
of plants in both water and sand cultures. Rep. Rhode Island Agric. 
Exp. Sta. 20: 299-357. f. 7, 2. . 1908. 
Heald, F. D. A disease of the cottonwood due to Z//vingia megaloma. 
Nebraska Agric. Exp. Sta. Rep. 19: 92-100. p/. 7-g. 1 F 1906. 
Heald, F.D. Report on the plant diseases prevalent in Nebraska 
during the season of 1905. Nebraska Agric. Exp. Sta. Rep. 19: 19- 
81. 1 F 1906. 
