68 INDEX TO AMERICAN BOTANICAL LITERATURE 
Hayes, H. K., & East, E. M. Improvement in corn. Connecticut 
Agr. Exp. Sta. Bull. 168: 1-21. pl. 1-4. Je 1911. 
Hedgcock, G. G., Bethel, E., & Hunt, N. R. Pifion blister-rust. 
Jour. Agr. Research 14: 411-424. pl. 54-57 + f.1. 2S 1918. 
Hedrick, U. P. Natural resistance to disease in fruits. Proc. Soc. 
Hort. Sci. 1912: 106-114. Mr 1913. 
Hedrick, U. P., & Wellington, R. The hereditary transmission of char- 
acters of apples. Proc. Soc. Hort. Sci. 1911: 19-29. F 1912. 
‘Heimlich, L. F. The trees of White County, Indiana, with some 
reference to those of the state. Proc. Indiana Acad. Sci. 1917: 
388-471. pl. I-32. 1918. 
Higgins, J. E. Sex in Carica papaya and its relation to breeding 
and cult re. Proc. Soc. Hort. Sci. 1910: 75-78. Ap 1911. 
Hill, A. W. The genus Caltha in the southern hemisphere. Ann. 
: 421-435. f. 7-10. Jl 1918. 
“gens ue C. alata, and C. phylloptera, spp. nov., are described. 
Hodgson, R. W. A sterigmatocystis smut of figs. Phytopathology 
8: 545, 546. O 1918. 
Hoffer, G. N., & Glanasoff, D. Corn-rootrot and wheat scab. Jour. 
Agr. Research 14: 611, 612. 23S 1918. 
Preliminary paper 
Holmes, J. S. Extension of the range of Prunus umbellata into North 
Carolina. Jour. Elisha Mitchell Sci. Soc. 34: 126-129. pl. 7, 8 
S 1918. 
Hotson, J. W. Sphagnum as a surgical dressing. Jour. Am. Peat 
Soc. 13: 195-226. f. 7-18. O 1918. 
Howard, W. L. The rest period in plants. Proc. Soc. Hort. Sci. 
1910: 33-46. Ap IgII. 
Howe, M. A. Calcareous algae from Murray Island, Australia, and 
Cocos-Keeling Islands. Papers Dep. Mar. Biol. Carnegie Inst. 
Washington 9: 291-296. pl. 97, ae 2: fo 98. 16 Au 1918. 
Carnegie Inst. Washington Publ. no. 
Jackson, H. S. The Uredinales of Sie 
Sci. 1917: 311-385. 1918. 
Jackson, H.S. The Uredinales of Indiana—II. 
Sci. 1917: 133-137. 1918. 
Jackson, H. S. The Ustilaginales of Indiana. 
Sci. 1917: 119-132. 1918. 
Proc. Indiana Acad. 
Proc. Indiana Acad. 
Proc. Indiana Acad. 
