CARDIAC EXCITABILITY— BROOKS 301 



26. Hodgkin, A. L., Huxley, A. F., and Katz, B. : Measurement of current-voltage relations in 



the membrane of the giant axon of Loligo, J. Physiol. 116: 424, 1952. 



27. Hutter, O. F., and Trautwein, W.: The effect of vagal stimulation on the sinus venosus of 



the frog heart, Nature 176: 512, 1955. 



28. Junkmann, K. : Beitrage zur Physiologic und Pharmakologie der Erregbarkeit des Frosch- 



herzens. Arch. Exp. Path. Pharmak. lOS: 313, 1925. 



29. Kao, F. F., Schlig, B., and Brooks, C. McC. : Impairment of the gas transport and exchange 



in acute hypothermy, J. Applied Physiol, 1955 (in preparation). 



30. Knowlton, F. P., and Starling, E. H. : The influence of variations in temperature and blood 



pressure on the performance of the isolated mammalian heart, J. Physiol. 44: 206, 1912. 



31. Lange, K., Weiner, D., and Gold, M. M. A.: Studies on the mechanism of cardiac injury in 



experimental hypothermia, Ann. Int. Med. Ji.-989, 1949. 



32. Lepeschkin, E. : Modern electrocardiography, The Williams and Wilkins Co., Baltimore, 



1951. 

 Zi. Lutz, W. : Zur Temperaturabhangigkeit d. Erregungsvorganges im Herzen, Ztschr. f . Kreis- 

 laufforsch. 37: 266, 1948. 



34. Lyman, C. P., and Chatfield, P. O. : Physiology of hibernation in mammals, Publ. of the 



Institute of Neurological Diseases and Blindness, National Institutes of Health, 1955. 



35. Pinkston, J. O. : Amer. J. Physiol., 1956 (in preparation). 



Z6. Pinkston, J. O., Kao, F. F., and Brooks, C. McC. : Studies on the excitability of the heart 

 as tested by chronically implanted electrodes and the effects of temperature thereon, 

 Proc. 19th Internat. Physiol. Congress, Montreal, 1953, p. 681. 



Z7. Rijlant, P.: £tude de I'origine du battement cardiaque a I'aide de I'oscillographe cathodique, 

 Ann. de Physiol., 4: 7S2, 1928. 



38. Rothlin, E., Taeschler, M., and Cerlatti, A. : Action of dinitrophenol and lanatoside C on the 



canine heart-lung preparation, Circ. Res. 3: Z2, 1955. 



39. Schiitz, E. : Elektrophysiologie des Herzens bei einphasischer Ableitung, Ergeb. d. Physiol. 



38: 493, 1936. 



40. Scott, J. C, and Reed, E. A. : Electrocardiographic effects of reflex vagal stimulation, Amer. 



J. Physiol. i(57; 441, 1951. 



41. Siebens, A. A., Hoffman, B. F., Gilbert, J. L., and Suckling, E. E. : Effect of rate on excita- 



bility of dog's ventricle, Am. J. Physiol. 166: 610, 1951. 



42. Siebens, A. A., Hoffman, B. F., Cranefield, P. F.. and Brooks, C. McC. : Post-extrasystolic 



potentiation of contraction in the intact heart, 1956 (in preparation) . 



43. Szent-Gyorgyi, A. : Nature of life — A study of muscle, Academic Press, Inc., N.Y., 1948. 



44. Talbott, J. H. : The physiologic and therapeutic effects of hypothermia, New England J. Al^ed. 



224: 281, 1941. 



45. Trautwein, W. : Temperature effects on Purkinje fiber action potentials measured with an 



intracellular electrode, Proc. 19th Internat. Physiol. Congress, Montreal, 1953. 



46. Trautwein, W., and Dudel, J. : Aktionspotential und Mechanogramm des Warmbluterherz- 



muskels als Funktion der Schlagfrequenz, Pfltig. Arch. ges. Physiol. 260: 24, 1954. 



47. Trautwein, W., and Dudel, J. : Aktionspotential und Mechanogramm des Katzenpillar- 



muskels als Funktion der Temperatur, Pfliig. Arch. ges. Physiol. 260: 104, 1954. 



48. Wiggers, C. J. : Physiology in health and disease, 5th Ed., Lea & Febiger, Phila., 1949, p. Z7 . 



49. Wiggers, C. J. : Circulation dynamics, Grune & Stratton, N.Y., 1952. 



50. Witz, H. : Fortgesetzte Untersuchungen fiber den Unterschied zwischen natiirlichen und 



kiinstlichen Reizen am Froshherzen, Z. Biologic, 9S: 551, 1938. 



