88 Gen, Sub. 
I. GENERAL SUBJECTS. 
[1904] 
647. [Morgan, T. H.] The dispensibility of the constant action of gravity 
and of a centrifugal force in the development of the toad's egg. 
Anat. Anz. xxv, pp. 94-96. 
648. . The control of heteroniorphosis in Planaria maculata. Arch. 
Entwickrnech. xvii, pp. 683-695, 1 fig. 
649. . Germ-layers and regeneration. Op. cit. xviii, pp. 262-264. 
650. . The relation between normal and abnormal development of 
the embryo of the frog (iii), as determined by some abnormal forms 
of development. T. c. pp. 507-534, pis. xxxi, xxxii. 
651. . An analysis of the phenomena of organic ' polarity.' Science 
XX, pp. 742-748. 
652. . Polarity and axial heteromorphosis. Amer. Natural, xxxviii, 
pp. 502-505. 
653. * . Evolution and adaptation. New York, 1903, 470 pp. 
Review by Bashford Dean, Science xix, pp. 221-224 ; and by W. E. C, 
Amer. Natural, xxxviii, pp. 398, 399. 
654. * . Die Entwickelung des Froscheies. Eine Einleitung in die 
experimentelle Embryologie. Ubersetzt von B. Solger. Leipzig, 
1904, 8vo, XV + 291 pp. 
655. & DiMON, Abigail C. An examination of the problems of 
physiological " polarity " and of electrical polarity in the earthworm. 
J. exp. Zool. i, pp. 331-347. 
656. & ScHiEDT, Alice E. Regeneration in the Planarian Phagocata 
gracilis. Biol Bull, vii, pp. 160-165. 
657. & Stevens, N. M. Experiments on polarity in Tuhidaria. 
J. exp. Zool. i, pp. 559-591. 
658. & ToRELLE, Ellen. The relation between normal and ab- 
normal development (iv), as determined by Roux's experiment of 
injuring the first formed blastomeres of the frog's egg. Arch. 
Entwickmech. xviii, pp. 535-554, jjI. xxxiii. 
659. MoROFF, T. tiber die Entwicklung der Kiemen bei Fischen. Arch, 
mikr. Anat. Ixiv, pp. 189-213, pis. xi, xii. 
660. Moser, Fanny. Beitrage zur vergleichenden Entwicklungsgeschichte 
der Schwimm blase. Arch. mikr. Anat. Ixiii, pp. 532-574, pis. xxii-xxv. 
661. MoszKOW\SKi, M. 0. Maas. Einfuhrung in die experimentelle Ent- 
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pp. 318-320. 
Review of Maas, (476) Gen. Sub. Zool. Rec. 1903. 
662. MoTT, F. W., Halliburton, W. D. & Edmunds, A. Regeneration 
of Nerves. (Preliminary Communication.) J. Physiol, xxxi, pp. 
vii-xii. 
663. *MuLLER, R. Jahrbuch der landwirtschaftlichen Pfianzen- und 
Tierziichtung. Sammelbericht liber die Leistungen in der Zucht- 
ungskunde und ihren Grenzgebieten. Herausg. von Prof. Dr Robert 
Miiller. i. Die Leistungen des Jahres 1903. Stuttgart, 1904. 
414 S. 
664. Munson, J. P. Researches on the oogenesis of the tortoise, 
Clemmys marmorata. Amer. J. Anat. iii, pp. 311-347, 7 pis. 
665. MuRBACH, L. The static function in Gonionemus. Biol. Bull, vi, 
pp. 317, 318. 
