INSECT VIRUSES 43 



development stages and a rod shaped stage of relatively simple morpho- 

 logical structure. 



LITERATURE CITED 

 Anderson, T. F. Bot. Rev., 1949, 15, 464. 

 Bang, F. B. /. Exptl. Med., 1948, 55, 251. 

 Bergold, G. H. Biol. Zentr., 1943, 63, 1. 

 Bergold, G. H. Z. N aturforsch., 1947, 2b, 122. 



Bergold, G. H. and Friedrich-Freksa, H. Z. N aturforsch., 1947, 2b, 410. 

 Bergold, G. H. Z. Naturforsch., 1948a, 5b, 25. 

 Bergold, G. H. Z. Naturforsch., 1948b, 5b, 338. 

 Bergold, G. H. Can. J. Res. Sect. E., 1950, 28, 5. 

 Bird, F. T. 1950 unpublished. 

 Bisset, K. A. J. Gen. Microbiol., 1950, 4, 1. 

 Heinmets, F. and Golub, O. J. 7. Bact., 1948, 56, 509. 

 Horsfall, F. L. Fed. Proc, 1949, 8, 518. 

 Hoyle, L. Brit. J. Exptl. Path., 1948, 29, 390. 

 Luria, S. E. Proc. Nat. Acad. Sci., 1947, 53, 253. 



Markham, R., Matthews, R. E. F. and Smith, K. M. Nature, 1948, i62, 88. 

 Putnam, F. W. and Kozloff, L. M. 7. Biol. Chem., 1950, i82, 243. 

 Trager, W. 7. Exptl. Med., 1935, 6i, 501. 

 Wellington, E. F. 1950 unpublished. 



