INDEX TO AMERICAN BOTANICAL LITERATURE 237 
Richards, H. M. & MacDougal, D. T. The influence of carbon mon- 
oxide and other gases upon plants. Bull. Torrey Club, 31: 57-66. 
11 F 1904; 167. 24 Mr 1904. 
Robinson, B. L. The identity of Amychia dichotoma. Rhodora, 6: 
50-53. 7 Mr 1904. 
Robinson, W. J. The spines of Fouguieria. Bull. Torrey Club, 31: 
45-50. f. 1-137. 19 Ja 1904. 
Safford, W. E. Extracts from the note-book of a naturalist on the 
island of Guam. — XIV. Plant World, 7: 1-8. pd. 7. Ja 1904; 
—XV. Plant World, 7: 25-31. p/. 2. F 1904; —XVI. Plant 
World, 7: 53-60. fl. g. Mr 1904. 
Safford, W. E. Henry Elwood Baum. Plant World, 7: 36-40. 
portrait. F 1go4. 
Seymour, M.C. A newly introduced Galium. Rhodora, 6: 22. 30 
Ja 1904. 
Notes the occurrence of G. praecox Lang at Norfolk, Conn. 
Shriner, F. A. & Copeland, E. B. Deforestation and creek flow about 
Monroe, Wisconsin. Bot. Gaz. 37: 139-143. 18 F 1904. [Illust.] 
Smith, E. F. & Swingle, D. B. The dry rot of potatoes due to 
fusarium oxysporum. U.S. Dep. Agr. Bur. Plant Ind. Bull. 55: 
1-64. p/. r-8. 16 F 1904. 
Smith, J D. Undescribed plants from Guatemala and other Central 
American republics. XXV. Bot. Gaz. 37: 208-214. 18 Mr 1904. 
New species are described in Svoanea, Platymiscium, Cassia, omnia Arthro- 
stemma, Oreopanax, Solanum (4), Brachistus, Coccoloba and Melis 
Snow, L. M. The effects of external agents on the pees of root- 
hairs. Bot. Gaz. 37: 143-145. 18 F 1904. 
Spillman, W. J. Horticultural varieties of common crops. Science, 
Il. 19: 34, 35. 1 Ja 1904. 
Squires, W. A. Wild flowers of prairie and canyon in northern Idaho. 
Plant World, 7: 41. F 1904. 
Stone, G. E. Physiological appliances —I. Torreya, 4: 1-5. f 7. 
2: 27 Ja 1904;—TII. Torreya, 4: 17-20.f 3, 5- 25 F 1904. 
Sumstine, D. R. The slime-moulds of Pennsylvania. Torreya, 4: 
36-38. 12 Mr 1904. 
Thom, C. Craterellus taxifolius, a new species of Thelephoraceae. 
Bot. Gaz. 37: 215-219. f. 7-8. 18 Mr 1904. 
Tullsen, H. Notes from Pine Ridge Agency, S. Dak. Plant World, 
7: 1-13. Ja 1904. 
