Feeding and Digestion 185 



132. Parkin, E. A., ;. Exper. Bio/. 17:364-377(1940). Digestive enzymes of wood- 

 boring larvae. 



133. Pavlovsky, E. N., and Zarin, E. J., Quart. I. Micr. Sci. 66:509-556 (1922). 

 Amylase in honeybee. 



134. Peczenik, O.. Ztschr. vergl. Physiol. 2:215-225 (1925). Protease in Limnaea. 



135. Phillips, E. F., /. Agy. Res. 35:385-428 (1927). Carbohydrases in adult honey- 

 bee. 



136. Phillipson, A. T., and McAnallv, R. A., /. Exper. Biol. 19:199-214 (1942). 

 Acid production in rumen of sheep. 



137. Putter. A., Z(sc/ir. allg. Physiol. 7:283-320, 321-368 (1908). Nutrition by 

 dissolved substances. 



138. PuH, Y. C, Contr. Biol. Lah. Sci. Soc. China, Zool. Ser. 13:121-133 (1940), 

 (from Chemical Abstracts). Digestive tract pH, earthworm. 



139. Ripper, VV., Zfsc/7r. vergl. Physiol. 13:314-333 (1930). Digestion of wood by 

 insect larvae. 



140. RoMijN, C, Arc/i. \cerZ. Zoo/. 1:373-431 (1935). Digestive enzymes in ceph- 

 alopods. 



141. Rosen, B., Zfschr. rerg/. P/rysfo/. 21:176-187(1934). Protein digestion, Helix. 



142. Rosen, B., Zfsc/ir. verg/. P/!>'.s;o/. 24:602-612(1937). Properties of proteinases of 

 gastropods and crustaceans. 



143. Roy, D. N., Ztschr. vergl. Physiol. 24:638-643 (1937). Nutrition of wax-moth. 



144. Sawano, E., Sci. Rep. Tohoku Univ., Ser. IV, 4:327-334 (1929). Digestion in 

 Ostrea. 



145. Sawano, E., Ann. Rep. Saito Grat. Found. Sendai 8:149-153 (1931). Enzymes 

 from anthozoan coelenterates. 



146. Sawano, E., Tokyo Bunrika Daigaku Sci. Rep. B, 2:101-126 (1935). Protein 

 digestion in cephalopod Polypus. 



147. Sawano, E., Tokyo Bunrika Daigaku Sci. Rep. B, 2:179-199 (1936). Protein 

 digestion, starfish. 



148. Sawano, E., Tokyo Bunrika Daigaku Sci. Rep. B, 3:221-241 (1938). Protease 

 in Paramecium. 



149. ScHLOTTKE, E., Ztschr. vergl. Physiol. 22:359-413 (1935). Digestion in Limulus. 



150. ScHLOTTKE, E., Ztschr. vergl. Physiol. 24:210-247, 422-450, and 463-492 (1937). 

 Distribution and properties of digestive enzymes: carnivorous Carabidae; Tettigonia 

 and Stenobothrus; Periplaneta. 



150a. Schmidt-Nielsen, B., Acta Physiol. Skand. 11:104-110 (1946). Sahva pH, man. 



151. Schwartz, C, et al., Pfliig. Arch. ges. Physiol. 202:475-477 (1924), ibid. 

 213:592-594 (1926). Acidity of saliva and gastric juices, domestic animals. 



152. Shapiro, N. H., Tr. Am. Micr. Soc. 46:45-50 (1927). Food vacuole pH, ciliates. 



153. Shinoda, O., Ztsc/ir. a'ergL P/iysfo!. 7:323-364(1928). Proteases in gastric juice 

 of crayfish. 



154. Shinoda, O., /. Biochem. 11:345-367 (1930). Digestive enzymes, silkworm. 



155. Shinoda, O., Annot. Zool. Japon. 13:117-125 (1931). Amylase in silkworm. 



156. Somorodinzew, I. A., and Debechine, K. V., Bull. Soc. Chim. hiol. 18:1097- 

 1105 (1936). Evidence for weak proteases, tapeworms. 



157. Spence, J., and Richards, O. W., Carnegie Inst., Wash., Tortugas Papers 32: 

 165-167 (1940). Cellulose in tunicates. 



158. Stober, W. K., Ztschr. vergl. Physiol. 6:530-565 (1927). Relation between 

 enzymes and diet, Lepidoptera. 



159. Sumner, J. B., and Somers, G. F., Chemistry and Methods of Enzymes. (1947). 

 New York, Academic Press, 415 p. 



160. Swingle, H. S., Ohio ]. Sci. 25:209-218 (1925). Digestive enzymes, Blatta. 



161. Swingle, H. S., Ann. Ent. Soc. Amer. 21:469-475 (1928). Digestive enzymes 

 of oriental fruit moth. 



162. Takatsuki, S., Quart. ]. Micr. Sci. 76:379-431 (1934). Digestive function of 

 amoebocytes in Ostrea. 



162a. Thorpe', W. H., Nature 130:437 (1932). Fly larvae in oil wells. 



163. Tracer, W., Biol. Bull. 66:182-190 (1934). Cultivation of flagellates on cellu- 

 lose. 



