62 PAPERS CITED. 



MATTHEWS, A. P. 1905. The toxic and antitoxic action of salts. Amer. Journ. 

 Physiology, vol. 12, pp. 419-443. 



MAYER, A. G. 1906. Preliminary report upon the rhythmical pulsation of Scypho- 

 medusae. Year Book of the Carnegie Institution of Washington for 1905, 

 No. 4, pp. 120-123. 



MELTZER, S. J., and AUER, J. 1905- '06. Physiological and pharmacological studies 

 of magnesium salts. I. General anaesthesia by subcutaneous injections, 

 American Journ. Physiol., vol. xiv, pp, 366-388. II. The toxicity of intra- 

 venous injections, etc. Ibid., vol. xv, pp. 385-405. III. The narcotizing 

 effect of magnesium salts upon nerve fibers. Ibid., vol. xvi, pp. 233-251. 



MERUNOWICZ, J. 1875. Ueber die chemischen Bedingungen fur die Enstelburg der 

 Herzschlages. Math. Phys. Ber., Leipzig, Bd. 22, pp. 252-298. 



MURBACH, L. 1903. The static function in Gonionemus. American Journ. Physiol., 

 vol. x, pp. 201-209. 



NAGEL, W. A. 1894. Experimentelle sinnesphysiologische Untersuchungen an 

 Coelenteraten. Pfliiger's Archiv fur die gesammte Physiol., Bd. 57, pp. 495- 

 552, Taf 7 ; also, Bd. 58, p. 308. 



PORTER, W. T. 1898. A new method for the study of the isolated mammalian 

 heart. Amer. Journ. Physiology, vol. i, pp. 511-518. Also 1897, Journal 

 of Experimental Medicine, vol. 2, p. 391. 



RINGER, S. 1883. A further contribution regarding the influence of the different 

 constituents of the blood on the contraction of the heart. Journal of Physi- 

 ology, Cambridge, England, vol. iv, pp. 29-42, pi. i. 



ROGERS, C. G. 1905. The effect of various salts upon the survival of the invertebrate 

 heart. Journ. of Experimental Zool., vol. n, No. 2, pp. 237-252, i plate. 



ROMANES, G. J. 1885. Jelly-fish, star-fish, and sea-urchins, being a research on prim- 

 itive nervous systems. International Scientific Series, vol. XLIX, New York. 

 (This is mainly a review of the author's previous papers in Nature, 1875, vol. 

 n, p. 29; Philosophical Trans. Royal Soc. London, vols. 166, 167, and 

 171, etc.) 



TULLBERG, T. 1892. Sur la conservation des invertebres a 1'etat d' epanouisse- 

 ment. Archiv. Zool. Exper. et Gen., Tome 10, p. xi-xiv. Also Journal 

 of the Royal Microscopical Society, ser. 2, vol. 12, 1892, p. 435. 



VON UEXKULL, J. 1901. Die Schwimmbewegungen von Rhizostoma pulmo, Mitth. 

 Zool. Stat. Neapel, Bd. xiv, pp. 620-626. 



1904. Die ersten Ursachen der Rythmus in der Tierreihe. Ergebnisse der 



Physiologic, Jahrg., 3, iv, Abt. 2, pp. i-n. 



YERKES, R. M. 1902. A contribution to the physiology of the nervous system of 

 Gonionemus murbachii. Part I, The sensory reaction of Gonionemus. 

 American Journ. of Physiol., vol. vi, No. 6, pp. 434-449. 



