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154. Plateau, F., Arch. Biol. 1:595-695 (1880). Drugs on lobster heart. 



155. Pratt. F. H., and Reid, M. A., Proc. Soc. Exper. Biol. & Med. 29:1019-1021 

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156. Prosser, C. L., Biol. Bull. 78:92-102 (1940). Acetylchohne and nervous inhibi- 

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157. Prosser, C. L., Biol. Bull. 83:145-164 (1942). Action of acetylchohne on 

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158. Prosser, C. L., /'. Cell. & Comp. Physiol. 21:295-305 (1943). Pacemaker dis- 

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158a. Prosser, C. L., Biol. Bull. 98:254-257 (1950). ECG in Arenicola. 



159. Prosser, C. L., Inada, C, et al., Anat. Rec. 99:601 (1947). Pressure in open 

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159a. Prosser, C. L., and Weinstein, S. J. F., Physiol. Zool. 23:113-124 (1950). 

 Blood volume in frog, catfish, crayfish and mussel. 



160. Prosser, C. L., and Zimmerman, G. L., Physiol. Zool. 16:77-83 (1943). Drugs 

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161. Ransom, W. B., /. Physiol. 5:261-341 (1883). Cardiac rhythm of invertebrates, 

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162. Reichert,' E. T., and Brown, A. P., Carnegie Inst., Wash., Publ. 116, 338 p. 

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163. Reid, M. A., /. Exper. Zool. 76:47-65 (1937). Activity of transplanted lymph 

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164. Reid, M. A., Personal communication (1947). Drugs on lymph hearts. 



165. Reinmuller, J., Pflug. Arch. ges. Physiol. 236:561-567 (1935). Electrical 

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166. Retzius, C, Biol. Unters. 12:75-78 (1905). Nerve cells on blood vessels of 

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167. Richardson, C, Burdette, A. C, et al., Ann. Ent. Soc. Amer. 24:503-507 

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168. Rijlant, p., C. R. Soc. Biol. Paris 113:917-920 (1933), ibid. 109:38-42 (1932). 

 Automatism of heart, spiders, crayfish. 



169. Rodbard, S., and Feldman, D., Proc. Soc. Exper. Biol. & Med. 63:43-44 (1946). 

 Blood pressure, turtle, chicken. 



170. Rogers, C. G., Textbook of Comparative Physiology (1938). New York, Mc- 

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171. Root, W., Gregersen, M., et al., Am. ]. Physiol. 146:739-755 (1946). Blood 

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172. Samoiloff, a.. Am. J. Physiol. 93:186-189 (1930). Electrical stimulation of 

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173. ScHAFER, G. D., Stanford Univ. Puhl. Biol. Sci. 3:307-337 (1923). Pressure in 

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174. Schoenlein, C, and Willem, V., Biill. Scient. France e. Belg. 26:442-468 

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175. ScHULTZE, L. S., Jen. Ztschr. Natur. 35:221-328 (1901). Heart of Salpa. 



176. Scudamore, H. H., Tr. III. State Acad. Sci. 34:238-240. (1941). Sinus gland 

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177. Shannon, E. W., and Wiggers, C J., Am. J. Physiol. 128:709-715 (1939). 

 Dynamics of frog and turtle heart. 



178. Skramlik, E. v., Ztschr. vergl. Physiol. 14:675-681 (1931). Pacemakers of fish 

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179. Skramlik, E. v., Ergehn. Biol. 11:1-130 (1935). Circulation in fishes. 



180. Skramlik, E. v., Ergehn. Biol. 18:88-286 (1941). Circulation in molluscs and 

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181. Smith, C, and Click, D., Biol. Bull. 77:321 (1939). Chohnesterase in hearts. 



182. Smith, R., Biol. Bull. 93:72-88 (1947). Action of nerves and drugs on heart of 

 Cancer. 



183. Spealman, C. R., Am. J. Physiol. 136:351-354 (1942). Ions on frog heart. 



184. Steiner, G., Ztschr. vergl. Physiol. 16:290-304 (1932). Automatism and regu- 

 lation, heart of Periplaneta. 



