ANALOGUES 



41. W. Drell and M. S. Dunn, /. Amev. Chem. Soc, 1946, 68, 1868. 

 41a. W. Drell and M. S. Dunn, ibid., 1948, 70, 2057. 



42. E. E. Snell and W. Shive, /. Biol. Chem., 1945, 158, 551. 



43. W. Shive and E. E. Snell, ibid., 1945, 160, 287 ; Research Corp., 



U.S.P. 2446615. 



44. W. I. Metzger, /. Bad., 1947, 54, 135. 



45. D. W. Woolley and M. L. Collyer, /. Biol. Chem., 1945. 169, 265. 



46. D. W. Woolley, ibid., 1946, 163, 481. 



47. M. M. Rapport, J. R Mead, J. T. Maynard, A. E. Senear and 



J. D. Koepfli, /. Amer. Chem. Soc, 1947, 69, 2561, 



48. H. O. Singher, N. Millman and M. R. Bosworth, Proc. Soc. Exp. 



Biol. Med., 1948, 67, 388. 



49. G. Johnson and A. B. Kupferberg, ibid., 390. 



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