INDEX TO AMERICAN BOTANICAL LITERATURE 35 
Stout, A. B. Sterility in lilacs. Jour. Hered. 13: 369-373. f. 
17-19. 25 Ap 1923. 
Sudworth, G. B. The technical nomenclature of North American 
trees. Jour. For. 21: 391-396. Ap 1923. 
Suessenguth, K. Uber den tagesperiodischen Farbwechsel von 
Selaginella serpens Spring. Biol. Zentralbl. 43: 123-1209. f. 
1-7. 31 Mr 1923. 
Tisdale, W.B. Influence of soil temperature upon the Fusarium 
disease in cabbage seedlings. Jour. Agr. Research 24: 
55-86. pl. r, 2 + f. 1-10. 7 Ap 1923. 
Tisdale, W. H., Taylor, J. W., & Griffiths, M. A. Experiments 
with hot water, foreldnhande copper carbonate, and 
chiorophol for the control of barley smuts. Phytopathology 
13: 153-160. 4 Ap 1923. 
Torrey, R.E. The comparative anatomy and phylogeny of the 
Coniferales——III. Mesozoic and Tertiary coniferous 
woods. Mem. Boston Soc. Nat. Hist. 6: 41-106. pl. 8-15. 
Ap 1923. 
Tottingham, W. E., & Rankin, E. J. The availability of iron in 
nutrient solutions for wheat. Am. Jour. Bot. 10: 203-210. 
J, F-¢. 16-AG 1923. 
Toumey, J. W., & Durland, W.D. The effect of soaking certain 
tree seeds in water at greenhouse temperatures on viability 
and the time required for germination. Jour. For. 21: 
369-375. Ap 1923. 
Uphof, J.C. T. An historic spot for students of genetics. Jour. 
Hered. 13: 343-345. f. 5-7. 25 Ap 1923. 
Recounts a visit to Spanderwoud, Holland. 
Vainio, E. A. Lichenes in Insula Trinidad a Professore R. 
Thaxter collecti. Proc. Am. Acad. Arts & Sci. 58: 131-148. 
Ja 1923. 
Includes 17 new species. 
Valleau, W. D. An important period in the life history of two 
bacterial organisms causing leaf-spots on tobacco. Phyto- 
pathology 13: 140-144. f. 1. 13 Mr 1923. 
