78o PATTERNS AND PROBLEMS OF DEVELOPMENT 



bryo. Arch. Entw'mech., 24. Morgan, T. H., and Spooner, G. B. 1909. The polarity 

 of the centrifuged egg. Ibid., 28. Morgan, T. H., and Stevens, N. M. 1904. Experi- 

 ments on polarity in Tubularia. Jour. Exp. Zool., i. Morgan, T. H.; Sturtevant, A. H.; 

 Muller, H. J.; and Bridges, C. B. 1923. The mechanism of Mendelian heredity. Rev. 

 ed. New York. Morgan, T. H., and Tyler, A. 1935. Effects of centrifuging eggs of 

 Urechis caupo before and after fertihzation. Jour. Exp. Zool., 70. 1938. The relation 

 between entrance point of the spermatozoon and bilaterality of the egg of Chaetopterus. 

 Biol. Bull., 74. — Morgulis, S. 1907. Observations and experiments on regeneration in 

 Lumbriciilus. Jour. Exp. Zool, 4. 1909. Contributions to the physiology of regenera- 

 tion. L Ibid.,']. 1912. Beitrage zur Regenerationsphysiologie. VI. Arch. ges. Physi- 

 ol., 143. — Moroff, T. 1908. Die bei den Cephalopoden vorkommenden Aggregatasiritn 

 als Grundlage einer kritischen Studie iiber die Physiologie des Zellkerns. Arch. Protis- 

 tenk., II. — Mortensen, T. 191 3. Regeneration in ctenophores. Vidensk. Meddel. 

 Dansk. Naturh. Foren. 66. — Motomura, I. 193 1. Notes on the effect of centrifugal 

 force on the frog's egg. Sci. Repts. Tohoku Imp. Univ., Ser. 4, Biol., 6. 1934. Uber die 

 Exogastrulabildung beim Seeigelkeim durch Auxin, Glycogen und KCIO3. Ibid., 9. — 

 Mottier, D. M. 1904. The development of the spermatozoid in Chara. Ann. Bot., 18. 

 — Muller, C. 1908. Regenerationsversuche an Lumbriculus variegatus und Tubifex 

 rivulorum. Arch. Entw'mech., 26. — Muller, E. 1896. tJber die Regeneration der Aug- 

 enhnse nach Exstirpation derselben bei Triton. Arch. Entw'mech., 47. — Muller, H. 

 1903. Beitrag zur Embryonalentwicklung der Ascaris megalocephala. Zoologica, H. 

 17. — Muller, K. 1911. Das Regenerationsvermogen der Siisswasserschwamme etc. 

 Arch. Entw'mech., 32. — Miiller-Cale, C. 1913. tJber die Entwicklung von Cypris in- 

 congruens. Zool. Jahrb. Abt. Anat. Ont., 36. — Munson, J. P. 1898. The ovarian egg 

 of Limulus. Jour. Morphol., 15. — Murray, Margaret. 1927. The cultivation of pla- 

 narian tissues //; D/Zro. Jour. Exp. Zool., 47. 1931. /« fZ/ro studies of planarian paren- 

 chyma. Arch. exp. Zellforsch., 11. — Murray, P. D. F., and Selby, Doris. 1930. 

 Chorio-allantoic grafts of entire and fragmented blastoderms of the chick. Jour. Exp. 

 Biol., 7. 



Nawaschin, S. 1900. Uber die Befruchtungsvorgange bei einigen Dicotyledoneen. 

 Ber. deutsch. bot. Ges., 18. — Needham, J. 1931. Chemical embryology. New York. 

 Needham, J., and Boell, E. J. 1938. Metabolic properties of the regions of the am- 

 phibian gastrula. Proc. Soc. Exp. Biol. Med., 39. Needham, J.; Rogers, V.; and 

 Shen, Shih -Chang. 1939. Morphogenesis and metabohsm, etc. V. Proc. Roy. Soc, B, 

 127. Needham, J.; Waddington, C.H.; and Needham, D. 1934. Physico-chemical ex- 

 periments on the amphibian organizer. Ibid., 12^. — Nemec, B. 1908. Einige Regener- 

 ationsversuche an Taraxacum-W wrzt\r\. Wiesner Festschr. Wien. — Newman, H. H. 

 1908. The process of heredity as exhibited by the development of Fundidus hybrids. 

 Jour. Exp. Zool, 5. 1914. Modes of inheritance in teleost hybrids. Ibid., 16. 1915a. 

 Development and heredity in heterogenic teleost hybrids. Ibid., 18. 1915b. Heredity 

 and organic symmetry in armadillo quadruplets. I. Biol. Bull., 29. 1916. Heredity 

 and organic symmetry, etc. II. Ibid., 30. 19170. The biology of twins. Chicago. 

 1917b. On the production of monsters by hybridization. Biol. Bull., 32. 1918. Hy- 

 brids between Fwj(^«/?<5 and mackerel. Jour. Exp. Zool., 26. 1921a. The experimental 

 production of twins and double monsters in larvae of the starfish, Patiria miniata, etc. 

 Ibid., :i,T). 1921b. On the occurrence of paired madreporic pores and pore canals in the 



