DORMANCY IN SEEDS 137 



101. Saulescu, N., "Untersuchungen liber die Hartschaligkeit beim Siebenburger 



Rotklee," Pflanzenbau, 11 : 180-186 (1934). 



102. Schaible, F., " Physiologische Experimente uber das Wachsthum und die Keimung 



einiger Pflanzen unter vermindertem Luftdruck," Beitr. Wiss. Bot., 4 : 93-148 

 (1900); Ahstr. in Bot. Centralbl., 82 : 52-54 (1900). 



103. Schaumann, K., "Uber die Keimungsbedingungen von Alisma plantago und 



anderen Wasserpflanzen," Jahrb. Wiss. Bot., 65 : 851-934 (1926). 



104. Schroeder, E. M., and L. V. Barton, "Germination and growth of some rock 



garden plants," C. B. T. I., 10 : 235-255 (1939). 



105. Schwendiman, A., and H. L. Shands, "Delayed germination or seed dormancy in 



Vicland oats," J. Am. Soc. Agron., 35 : 681-€88 (1943); also in News Letter 

 Assoc. Off. Seed Anal, 17(4) : 14 (Oct., 1943). 



106. Shaw, M. F., "A mitrochemical study of the fruit coat of Nelumbo lutea," Am. J. 



Bot., 16 : 259-276 (1929). 



107. Shuck, A. L., "The formation of growth inhibiting substance in germinating lettuce 



seeds," Internat. Seed Testing Assoc. Proc, 7 : 9-14 (1935). 



108. , "Light as a factor influencing the dormancy of lettuce seeds," Plant Physiol, 



10 : 193-196 (1935). 



109. Shull, C. A., "The oxygen minimum and the germination of Xanthium seeds," 



BoL Gaz., 52 : 453-477 (1911). 



110. , "The role of oxygen in germination," Bot. Gaz., 57 : 64-69 (1914). 



111. , and W. B. Davis, "Delayed germination and catalase activity in Xanthium," 



BoL Gaz., 75 : 268-281 (1923). 



112. Spaeth, J. N., "Dormancy in seeds of basswood, Tilia americana L.," Am. J. Bot., 



19 : 835 (1932). 



113. Sprague, V. G., "Germination of freshly harvested seeds of several Poa species and 



of Dactylis glomerata," J. Am. Soc. Agron., 32 : 715-721 (1940). 



114. Staifelt, M. G., "Die Permeabilitat des Sauerstoffs in vervvundeten und intakten 



KeimUngen von Sinapis alba," Biol Zentralbl, 46 : 11-23 (1926). 



115. Stevenson, T. M., "Sweet clover studies on habit of growth, .seed pigmentation and 



permeabiUty of the seed coat," Sci. Agric., 17 : 627-654 (1937). 



116. Stier, H. L., "The effect of certain seed treatments on the germination of recently 



harvested potato seeds," Proc. Am. Soc. Hort. Sci., 35(1937) : 601-605 (1938). 



117. Stiitz, H., Uber den Einfluss verschiedenartiger Lagerung auf die Hartschahgkeit 



von Kleesamen," 42 pp.. Diss., Hamburg, 1933. 



118. Takahashi, T., "Is germination possible in absence of air?" Bull Coll Agric. 



Tokyo, 6 : 439-442 (1905). 



119. Taylor, D. L., "Influence of oxygen tension on respiration, fermentation, and 



growth in wheat and rice," Am. J. Bot., 29 : 721-738 (1942). 



120. Thornton, N. C., "Factors influencing germination and development of dormancy 



in cocklebur seeds," C. B. T. I., 7 : 477-496 (1935). 



121. ," Carbon dioxide storage. IX. Germination of lettuce seeds at high tempera- 

 tures in both Hght and darkness," C. B. T. I., 8 : 25-40 (1936). 



122. Toole, E. H., and V. K. Toole, "Progress of germination of seed of Digitaria as 



influenced by germination temperature and other factors," J. Agric. Res., 

 63 : 65-90 (1941). 



123. Toole, V. K., "Notes on the viabihty of the impermeable seed of Vicia viUosa, 



hairy vetch," Proc. Assoc. Off. Seed Anal N. Am., 31 : 109-111 (1939). 



124. , "Germination of seed of vine-mesquite, Panicum obtusum, and plains bristle- 

 grass, Setaria macrostachya," J. Am. Soc. Agron., 32 : 503-512 (1940). 



125. , "Factors affecting the germination of various dropseed grasses (Sporobolns 



spp.)," /. Agric. Res., 62 : 691-715 (1941). 



126. Verschaffelt, E., "Le traitement chimique des graines a imbibition tardive," Rec. 



Trav. BoL Ncerland., 9 : 401-435 (1912). 



