Jan. 20,1923 
Cytological Study of Infection 
151 
(25) Spinks, G. T. 
1913. FACTORS AFFECTING SUSCEPTIBILITY TO DISEASE IN PLANTS. In Jour. 
Agr. Sci., V. 5, pt. 3, p. 231-247, pi. 7. 
(26) Stakman, E. C. 
1914. a study in cereal rusts: physiological races. Minn. Agr. Exp. 
Sta. Bui. 138, 56 p., 9 pi. Bibliography, p. 50-54. 
(27) - 
1915. relation between puccinia graminis and plants highly resistant 
to its attack. In Jour. Agr. Research, v. 4, no. 3, p. 193-200, pi. 28. 
Literature cited, p. 198-199. 
(28) Ward, H. Marshall. 
1903. FURTHER OBSERVATIONS ON THE BROWN RUST OF THE BROMES, PUCCINIA 
dispErsa (erikss.) and its adaptive parasitism. In Ann. Mycol., 
v. I, no. 2, p. 132-151. Bibliography, p. 151. 
(29) 
(30) 
1904. ON THE HISTOLOGY OF UREDO DISPERSA, ERIKSS., AND THE “MYCOPLASM’* 
hypothesis. In Phil. Trans. Roy. Soc. Bond., ser. B, v. 196, p. 29-46, 
pi. 4-6 (1 col.). 
1905. RECENT RESEARCHES ON THE PARASITISM OF FUNGI. In Ann. Bot., 
v. 19, no. 73, p. 1-54. Literature, p. 50-54. 
