BIBLIOGRAPHY AND AUTHOR-INDEX 427 



OPPENHEiMERj J. M. 1936. Transplantation experiments in developing 



teleosts. J. Exp. Zool. 72. 152 

 PAINTER, T. s. 1934. The morphology of the X chromosomes in the salivary 



glands of D. melanogaster and a new type of chromosome map for this 



element. Gen. 19. 98, 99 

 1935. Do. Ilird chromosome. Gen. 20. 98, 99 



1939. The structure of salivary gland chromosomes. Am. Nat. 73. 98. 

 and MULLER, H. J. 1929. Parallel cytology and genetics of induced 



translocations and deletions in Drosophila. J. Hered. 20. 97 

 and STONE, w. s. 1935. Chromosome fusion and speciation in Drosophila. 



Gen. 20. 95 

 PARKS, H. B. 1936. The relationship between the first cleavage spindle and 



mosaic formation. J. Hered. 27. 85 

 PARNELL, F. R. 1 92 1. A note on the detection of segregation by examination 



of the pollen of rice. J. Gen. 11. 55 

 PATAU, K. 1935. Chromosomenmorphologie bei D. melanogaster und 



D. simidans und ihre genetische Bedeutimg. Naturvnss. 23. 265 

 PATTERSON, J. T., STON^, w., and BEDICHEK, s. 1935. The gcnetics of X- 



hyperploid females. Gen. 20. 223 

 PEACOCK, A. D. 1925. Animal parthenogenesis in relation to chromosomes and 



species. Am. Nat. 59. 58, 61 

 PEARL, R. 1930. Introduction to medical biometry and statistics. Philadelphia. 



333 

 PEARSON, K., and lee, k. 1903. The law of ancestral heredity. Biometrika 2. 



334 

 PELLEW, c. 1929. The genetics of unlike reciprocal hybrids. Biol. Rev. U. 



275 

 and SANSOME, e. r. 193 i. Genetical and cytological studies on the 



relation between European and Asiatic varieties of Pisum sativum. 



J. Gen. 25. 268 

 PENROSE, L. s. 1936. Mental defect. London. 335 

 PHILIP, u. 1935. Crossing over between X and Y chromosomes in Z). we/ano- 



gaster. J. Gen. 31 . 78 

 PHILP, J., and HUSKINS, c. L. 193 1. The cytology of Matthiola incana 



R. Br., especially in relation to the inheritance of double flowers. 



J. Gen. 2L 55 

 PiCKHAN, A. 1936. Welche Strahlendose dtirfen bei der Rontgendiagnostik 



als unschadUch betrachtet werden? Fortschr. Rontgenstr. 53. 382 

 PiNCUS, G., and waddington, c. h. 1939. The effect of colchicine on rabbit 



eggs. J. Hered. 255 

 and WHITE, P. 1934. On the inheritance of diabetes mellitus HI. Am. J. 



Med. Sci. 6. 326 

 PLOUGH, H. H. 1917. The effect of temperature on crossing over in Droso- 

 phila. J. Exp. Zool. 24. 93, loi 

 POPENHOE, P., and johnson, r. s. 1933. Applied Eugenics, 2nd ed. London. 



355 

 POULSON, D. F. 1937. The embryonic development of D. melanogaster. 



Actualites Sci. et Ind. Paris. 145 

 PRATT. 1932. In Allen's Sex and Internal Secretions. London. 332 

 prokofieva (belgovskaia), a. A. 1935. The structure of the chromocenter. 



Cyt. 6. 396 

 PUNNETT, R. c. 1923. Heredity in poultry. London. 205 



