70 INDEX TO AMERICAN BOTANICAL LITERATURE 
Nash, G. V. Cornus mas. Addisonia 3: 41. pl. ror. S 1918. 
Nash, G. V. Crassula portulacea. Addisonia 3: 57. pl. 109. S 1918. 
Nash, G.V. Ilex serrata argutidens. Addisonia 3: 51. pl. 106. S 1918. 
Nash, G. V. Magnolia kobus. Addisonia 3: 55, 56. pl. 108. S 1918. 
Nash, G. V. Othonna crassifolia. Addisonia 3: 53. pl. 107. S 1918. 
Nelson, J. C. Notes on the flora of Lake Labish, Oregon. Torreya 
18: 191-195. 29 O 1918. 
Nichols, G. E. The sphagnum moss and its use in surgical dressings. 
Jour. N. Y. Bot. Gard. 19: 203-220. pl. 216-218. S 1918. 
Norton, J. B. S. Some unusual tomato variations. Proc. Soc. Hort. 
Sci. rg10: 71-75. Ap I19II. 
Nothnagel, M. Resistance of Mucorzygotes. Proc. Indiana Acad. 
Sci. 1917: 181-187. 1918. 
Noyes, H. A. Reaction of culture media. Proc. Indiana Acad. Sci. 
1917: 149-162. 1918. 
Noyes, H. A., Trost, J. F., & Yoder, L. Root variations induced by 
carbon dioxide gas additions to soil. Bot. Gaz. 66: 364-373. f. I-9- 
16 O 1918. 
Osner, G. A. Additions to the list of plant diseases of economic im- 
portance in Indiana. Proc. Indiana Acad. Sci. 1917: 145-147. 
1918. 
Ottley, A. M. A contribution to the life history of Impatiens Sultant. 
Bot. Gaz. 66: 289-317. pl. 14, 15. 16 O 1918. 
Pammel, L. H. Prickly lettuce. Rhodora 20: 180, 181. O 1918. 
Pfeiffer, N. E. The sporangia of Thismia americana. Bot. Gaz. 66: 
354-363. pl. 16. 160 1918. 
Pipal, F. J. A suspected case of stock poisoning by wild onion (Allium 
canadense). Proc. Indiana Acad. Sci. 1917: 139-143. 1918. 
[Illust.] 
Price, H. L. Some results of cabbage crosses. Proc. Soc. Hort. Sci. 
1g10: 53-60. Ap IgII. 
Reddick, D., & Stewart, V. B. Varieties of beans susceptible to mo- 
saic. Phytopathology 8: 530-534. O 1918. 
Reed, H. S. Absorption of sodium and calcium by wheat seedlings. 
Bot. Gaz. 66: 374-380. f. 1. 160 1918. 
Reimer, F.C. Self-sterility of rotundifolia grapes. Proc. Soc. Hort. 
Sci. r9t0: 27-32. Ap Igit. 
Reynolds, E. S. Two tomato diseases. Chiytonatticlogy 8: 535-542. 
j. 1,2 Q 1918. 
