Index to American Mycological Literature 
45 
Hartley, C. Twig canker on black birch. Phytopathology 3 : 
248, 249. Au 1913. 
Heald, F. D. The symptoms of chestnut tree blight and a brief 
description of the blight fungus. Pennsylvania Chestnut Tree 
Blight Commission Bull. 5: 3-15. pi. 1-16. 15 My 1913. 
Hedgcock, G. G., & Long, W. H. Notes on cultures of three 
species of Peridermium. Phytopathology 3: 250, 251. A11 
1913 . 
Hedgcock, G. G., & Long, W. H. An undescribed species of Peri- 
dermium from Colorado. Phytopathology 3:. 251, 252. Au 
I 9 I 3 - 
Peridermium Betheli sp. nov. 
Hewitt, J. L. Puccinia pruni-spinosa killing plum nursery stock. 
Phytopathology 3 : 270. O 1913. 
Hewitt, J. L. Rose mildew. Phytopathology 3: 270. O 1913. 
Hoffmann, C. Relation of soil bacteria to evaporation. Ann. 
Rep. Wisconsin Agr. Exp. Sta. 29: 183-215. 1913. 
Long, W. H. Three undescribed heart-rots of hardwood trees, 
especially of oak. Jour. Agr. Research 1 : 109-128. pi. 7, 8 . 
N 1913. 
Lutman, B. F. Studies on club-root. I. The relation of Plas- 
modiophora brassicae to its host and the structure and growth 
of its plasmodium. Vermont Agr. Exp. Sta. Bull. 175: 3-27. 
pi. 1-4 + /. 1-6. O 1913. 
Lutman, B. F. The pathological anatomy of potato scab. Phy- 
topathology 3 : 255-264. /. 1-10. O 1913. ‘ 
Matheny, W. A. A comparison of the American brown-rot 
fungus with Sclerotinia fructigcna and S'. cinerea . of Europe. 
Bot. Gaz. 56: 418-432. /. 1-6. 15 N 1913. 
Metcalf, H. The chestnut bark disease. Yearbook Dept. Agr. 
1912 : 361-372. pi. 34-37. 1913. 
Morse, W. J., & Darrow, W. H. Is apple scab on young shoots 
a source of spring infection? Phytopathology 3: 265-269. 
O 1913. 
Olive, E. W. Intermingling of perennial sporophytic and gameto- 
phytic generations in Puccinia Podopliylli, P. obtegens, and 
