92 GENETICS [Bot. Absts. 



By crossing with C. Heegeri, a segregation concerning capsule form took place in the propor- 

 tion 15 : 1, as has been first observed by Shull. If Ee and EE [in original paper by a mistake 

 these were written Ee and ee] are considered as one group, the segregation will be 45 : 15 : 

 3:1. Results were as follows: — 



Obtained Calculated 



C. bursa-pastoris apetala 298 288.98 ± 9.26 



C. bursa-pasloris normalis 96 96.33 =*= 8.59 



C. Heegeri apetala 14 19.27 ± 4.29 



C. Heegeri normalis 3 6.42 =*= 2.51 



Many disappointing crossings were made between Capsella grandiflora and other Capsella 

 forms. A flowering Fi plant has perhaps been produced; this one however did not give any 

 seeds. [See Bot. Absts. 3, Entry 1473.] — K. V. Ossian Dahlgren. 



617. Danforth, C. H. Evidence that germ cells are subject to selection on the basis of 

 their genetic potentialities. Jour. Exp. Zool. 28: 385-412. July 5, 1919.— See Bot. Absts. 3, 



Entry 990. 



618. Dehaut, E. G. Developpement en sens inverse de la coloration verte, chez Lacerta 

 muralis tiliguerta et L. mur. quadrilineata. [Development of green coloration in reverse direction 

 in Lacerta muralis tiliguerta and L. m. quadrilineata.] Compt. Rend. Soc. Biol. France 82: 

 514-515. May 17, 1919.— See Bot. Absts. 3, Entry 1474. 



619. Dehaut, E. G. Interversion d'un caractere cranien dans certaines races du Sus scrofa. 

 [Interversion of a cranial character in certain races of Sus scrofa.] Compt. Rend. Soc. Biol. 

 France 82: 515-516. May 17, 1919— See Bot. Absts. 3, Entry 1475. 



620. Delphin, L. [Rev. of: Downing, Elliot R. The third and fourth generation. 

 An introduction to heredity. 164 P-, 13 fig. University of Chicago Press: Chicago. 1918.] 

 Rev. Gen. Sci. Pure" et Appl. 30: 58. 1919. 



621. Doncaster, L. Note on an experiment dealing with mutation in bacteria. Proc. 

 Cambridge Phil. Soc. 19: 269. 1919— See Bot. Absts. 3, Entry 823. 



622. Dorset, M. J. A note on the dropping of flowers in the potato. Jour. Heredity 10: 

 226-228. Fig. 19. May, 1919. 



623. Drieberg, C. A freak papaw (Carica Papaya). Jour. Heredity 10 : 207. May, 1919. 



624. Dxjerden, J. E. Crossing the North African and South African ostrich. Jour. 

 Genetics 8: 155-198. PI. 7, 2 fig. June, 1919.— See Bot. Absts. 3, Entry 2118. 



625. Edmonds, M. E., and P. Sargeant. Variability in plants. Gard. Chron. 65:299. 

 June 14, 1919.— See Bot. Absts. 3, Entry 993. 



626. Enriques, Paola. [French rev. of: Maiocco, F. L. Le leggi di Mendel e l'eredita 

 [Les lois de Mendel et l'heredite]. [Mendel's law and heredity.] 222 p. Fratelli Bocca: 

 Torino, 1918.] Scientia 25: 510-511. 1919. 



627. Falck, K. De forsta grunderna av arftlighetslaran. [On the first principles of 

 genetical science. 25 p. Stockholm, 1919.— Small pamphlet written for use in schools.— K.V. 

 Ossian Dahlgren. 



628. Faure, Ch. Note sur un cas d'hermaphroditisme rudimentaire chez le coq. [Note 

 on a case of rudimentary hermaphroditism in the cock.] Compt. Rend. Soc. Biol. France 82: 

 £19-520. May 17. 1919— See Bot. Absts, 3, Entry 1480. 



