392 INDEX TO AMERICAN BOTANICAL LITERATURE 
Illick, J. S. The maples. Am. For. 28: 12-19. Ja 1922. 
Illick, J. S. What our Christmas trees are. Am. For. 27: 739- 
749. D 1ogai. [Illust.] 
Illick, J. S. The sycamores. Am. For. 28: 145-150. Mr 1922. 
{Ilust.] 
Illick, J. S. Woody plants of Franklin County, Pennsylvania. 
Pennsylvania Dept. For. Bull. 21: 5-42. 1 Ja 1921. 
Jackson, B. D. Thomas Nuttall (1786-1859). Jour. Bot. 60: 
59. -- 1922, 
Note, supplied by Mr. F. R. Dixon-Nuttall, as to late residence and 
burial place of Thomas Nuttall. 
Jepson, W. L. The giant Sequoia. In Hall, A. F., Handbook 
of Yosemite National Park [California], 235-246. pl. 22, 23. 
New York. 1921. 
Joffe, J. S. Studies of sulfur oxidation in sulfur-floats-soil 
mixtures. Soil Sci. 13: 107-118. F 1922. 
Johnson, J. The relation of air temperature to certain plant 
diseases. Phytopathology 11: 446-458. pl. 21-23. 25 
1922. 
Jones, D. F. Hybridization in plant and animal improvement. 
Sci. Mo. 14: 5-23. Ja 1922. [[llust.] 
Jones, D. F. The indeterminate growth factor in tobacco and 
its effect upon development. Genetics 6: 433-444. f. I-5. 
5. FOat. 
Jones, D. F. Selective fertilization as an indication of germinal 
differences. Science II. 55: 348, 349. 31 Mr 1922. 
Jones, F. R., & Vaughan, R. E. Anthracnose of the garden pea. 
Phytovatholosy 11: 500-503. pl. 25+f. 1-2. 21 Mr 1922. 
Judd, C. = Kilanea National Park trees. Hawaiian For. & 
Agr. 18: 255-260. D ig21. [Illust.] 
Kaiser, G. B. Little journeys into mossland. V. The old genus 
Hypnum. Bryologist 24: 58-60. 9 Ja 1922. 
