6oo APPENDIX IV 



Dopp, W., 1932 Die Apogamie bei Aspidium remotum Al. Br. Planta, 17, 



86-152. 

 DoRSEY, E., 1936, Induced polyploidy in wheat and rye. /. Hered., 27, 



154-160. 

 DouTRELiGNE, J., 1933, Chromosomes et nucleoles dans les noyaux du type 



euchromocentrique. Cellule, 42, 31-100. 

 Drygalski, U. v., 1935, tJber die Entstehung einer tetraploiden, genetisch 



ungleichmassigen F2 aus der Kreuzung Saxifraga adscendens L. x S. 



tridactylites L. Z.I.A.V., 69, 278-300. 

 Dubinin, N. P., 1934, Experimental reduction in the number of chromosome 



pairs in Drosophila melanogaster. Biol. Jur., 3, 719-736. 

 Dubinin, N. P., and Heptner, M. A., 1935, A new phenotypic effect of the 



Y-chromosome in Drosophila melanogaster . J. Genet., 30, 423-446. 

 Dubinin, N. P., and Sidoroff, B. N., 1934, Relation between the effect of a 



gene and its position in the system. Amer. Nat., 68, 377-381. 

 Dubinin, N. P., et alii, 1936, Occurrence and distribution of chromosome 



aberrations in nature. Nature, 137, 1035-1036. 

 Du Bois, A. M., 1933, Chromosome behavior during cleavage in the eggs 



of Sciara coprophila (Diptera) in relation to the problem of sex deter- 

 mination. Zeits. Zellf. 11. mikr. Anat., 19, 595-614. 



Earl, R. O., 1927, The nature of chromosomes. I. Effects of reagents on 



root-tip sections of Vicia faba. Bot. Gaz., 84, 58-74. 

 *East, E. M., 1929, The concept of the gene. Proc. Int. Cong. PI. Sc, 1, 



889-895. 

 East, E. M., 1930, The Production of Homozygotes through induced Partheno- 

 genesis. Science, 72, 148-149. 

 East, E. M., 1933, The behavior of a triploid in Nicotiana Tabacum L. 



Amer. J. Bot., 20, 269-289. 

 East, E. M., 1934, A novel type of hybridity in Fragaria. Genetics, 19, 



167-174. 

 Edwards, Ch., 1910, The idiochromosomes in A scans megalocephala and 



Ascaris lumbricoides. Arch. Zellf., 5, 422-429. 

 Eisentraut, M., 1926, Die spermatogonialen Teilungen bei Acridiern mit 



besonderer Beriicksichtigung der tjberkreuzungsfiguren. Zeits. wiss. 



Zool.. 127, 141-183. 

 Eisentraut, M., 1928, Uber das Auftreten von Chromosomenblaschen in den 



Reifeteilungen einiger Acridier. Zeits. wiss. Zool., 128, 253-266. 

 Ekstrand, H., 1918, Zur Zytologie und Embryologie der Gattung Plantago 



(Vorlaufige Mitteilung). Svensk Bot. Tidsskr., 12, 202-206. 

 Ellenhorn, J., 1933, Experimental-photographische Studien der lebenden 



Zelle. Zeits. Zellf. u. mikr. Anat., 20, 2S8-308. 

 Ellenhorn, J., 1934, Zytologische Studien iiber die genetisch bedeutsamen 



Kernstrukturen, Zeits. f. Zellf. u. mikr. Anat., 21, 24-41. 

 Ellenhorn, J., Prokofjeva, A., and Muller, H. J., 1935, The optical 



dissociation of Drosophila chromomeres by means of ultra-violet light, 



C. R. Acad. Sci. U.R.S.S., 1935, 1 (4). 234-242. 

 Emerson, R. A., 1932, The present status of maize genetics. Proc. 6th Int. 



Cong. Genet., 141-152. 

 Emerson, R. A., Beadle, G. W., and Eraser, A. C., 1935, A summary of 



linkage studies in Maize. Cornell Memoir, 180, 1-83. 

 Emerson, S. H., 1929, The reduction division in a haploid (Enothera. Cellule, 



39, 159-165. 

 Emerson, S. [H.], 193 i, Parasynapsis and Apparent Chiasms Forniation it\ 



CEnothera. Amer. Nat., 65, 551-555- 



