460 PLANT GROWTH SUBSTANCES 



37. Horowitz, N. H., ibid., 154:141 (1944). 



38. , ibid., 171:255 (1947). 



39. , HouLAHAN, M. B., HuNGATE, M. G., and Wright, B., Science, 



104:233 (1946). 



40. HuNGATE, F. P., Stanford Univ. thesis (1946). 



41. KiRKVvooD, S. and Phillips, P. H.,/. Biol. Chem., 163:251 (1946), 



42. KoGL, F. and Fries, N., Z. physiol. chem., 249:93 (1937). 



43. KoGL, F., and ToNNis, B., ibid., 242:43 (1936). 



44. Lane, R. L. and Williams, R. J., Arch. Biochem., 19:329 (1948). 



45. Lein, J., Mitchell, H. K., and Houlahan, M. B., Proc. Nat. Acad. Sci. 



U- S., 34:435 (1948). 



46. LiNDEGREN, C. C, Ann. Rev. Microbiol., 2:47 (1948). 



47. , and LiNDEGREN, G., Ann. Missouri Botan. Garden, 34:95 (1947)- 



48. McElroy, W. D., Gushing, J. E., and Miller, H., /. Cellular Comp. 



Physiol, 30:331 (1947). 



49. McElroy, W. D. and Mitchell, H. K., Fed. Proc, 3:376 (1946). 



50. MacKinnon, J. E. and Artagaveytia-Allende, R. C., /. Bact., 56:91 



(1948). 



51. Markert, C. L., Personal communication. 



52. Miller, H. and McElroy, W. D., Science, 107:193 (1948). 



53. Mitchell, H. K. and Houlahan, M. B., Fed. Proc, 6:506 (1947). 



54. , Biol. Chem., 174:883 (1948). 



55. Mitchell, H. K. and Lein, ].,]. Biol. Chem., 175:481 (1948). 



56. Mitchell, H. K. and Nyc, J. F., Proc Nat. Acad. Sci. U. S., 34:1 (1948). 



57. , and Owen, R. D., /. Biol. Chem., 175:433 (1948). 



58. Nyc, J. F., Haskins, F, A., and Mitchell, H. K., Arch. Biochem., 23:161 



(1949). 



59. Perkins, D., Genetics (in press). 



60. Perl\l\n, D., Am. J. Botany, 35:36 (1948). 



61. , ibid., 35:360 (1948). 



62. Pomper, S., Yale Univ. thesis (1949). 



63. Rainbow, G., Nature, 162:572 (1948). 



64. Reaume, S. E. and Tatum, E. L., Arch. Biochem., 22:331 (1949). 



65. Regnery, D., Personal communication. 



66. RoBBiNS, W. J., Ann. N. Y. Acad. Sci., 49:75 (1947). 



67. , and Kavanagh, V., Botan. Rev., 8:441 (1942). 



68. RoBBiNS, W. J. and Ma, R., Science, 96:406 (1944). 



69. Sakami, W., /. Biol. Chem., 176:999 (1948). 



70. Schopfer, W. H., Ber. dtsch. bot. Ges., 52:308 (1934). 



71. , and Bein, M. L., Experientia, 4:147 (1948). 



72. Schopfer, W. H., Posternak, T., and Boss, M. L., Rev. internal. 



vitaminologie, 20:121 (1948). 



73. Shemin, D., /. Biol. Chem., 162:297 (1946). 



74. , and RiTTENBERG, D., ibid., 158:71 (1945). 



75. Shemin, D. and Tatum, E. L., Unpublished results. 



76. SiMMONDS, S., /. Biol. Chem., 174:717 (1948). 



77. SoNNEBORN, T. M., Adv. Gcnctics, 1:263 (1947)- 



78. Tatum, E. L., Unpublished results. 



79. , Fed. Proc, 8:511 (1949). 



