384 INDEX TO AMERICAN BOTANICAL LITERATURE 
Giddings, N. J., & Berg, A. A comparison of the late blights of to- 
mato and potato. Phytopathology 9: 209, 210. pl. rz. 23 My 
1919. 
Gleason, H. A. Notes of the introduced flora of the. Douglas Lake 
region. Michigan Acad. Sci. Ann. Rep. 20:153. 22 N 1918. 
(Abstract.) . 
Gleason, H. A. Scirpus validus for demonstrating procambium. 
Michigan Acad. Sci.. Ann. Rep. 20: 153. 22 N 1918. 
(Abstract.) 
Graves, A. H. Some diseases of trees in Greater New York. My- 
cologia 11: 111-124. pl. ro. My 1919. 
Griggs, R. F. The beginnings of revegetation in Katmai Valley. 
Ohio Jour. Sci. 19: 318-342. Ap 1919. [Illust.] 
Giissow, H. T. The Canadian tuckahoe. Mycologia 11: 104-110. 
- 7-9. 7 Je 1919. 
Grifola Tuckahoe sp.. nov. is described. 
Haas, A. R. C. Effect of anesthetics upon respiration. Bot. Gaz. 
67: 377-404. f. I-4. 19 My Ig19. 
Harvey, L. H. A coniferous sand dune in Cape Breton Island. Bot. 
Gaz. 67: 417-426. f. 1-8. 19 My 1919. 
Harvey, R. B. Importance of epidermal coverings. Bot. Gaz. 67: 
441-444. f. 1, 2. 19 My 1919. 
Hibbard, R. P. Salt ratios in soil cultures. Michigan Acad. Sci. 
Ann. Rep. 20: 147-150. 22 N 1918. 
Holman, R. M., & Reed, E. Notes on the phyotplankton and other 
algae of Douglas Lake and vicinity. Michigan Acad. Sci. Ann. 
Rep. 20: 153, 154. 22 N 1918. 
Howe, I. A. Some new stations for rare plants in northeastern Ver- 
mont. Vermont Bot. & Bird Club Bull. 4 &5: 15-19. Ap 1919. 
Hunt, N. R. The ‘‘iceless refrigerator” as an inoculation chamber. 
Phytopathology 9: 211, 212. pl. r2. 23 My 1919. 
Jennings, O. E. Potamogeton Vaseyi in northeastern Ohio. Ohio 
Jour. Sci. 19: 343. Ap 1919. 
Johnston, E.L. Thesandlily. Am. Bot. 25: 52-54. My 1919. 
Kern, F.D. North American rusts on Cyperus and Eleocharis. Myco- 
logia 11: 134-147. 7 Je 1919. 
Puccinia abrepta, P. liberta and Uredo incomposita, spp. nov., are described. 
