258 REFERENCES TO THE LITERATURE 



SCHWALBE,G. 1872 Beitrage zur Kenntniss der Driisen in den Darmwandungen 

 in's Besondere der Brunner'schen Driisen. Arch. f. mikr. Anat., 

 vol. 8, pp. 92-140, pi. V. 



SELENKA, EMIL 1883 Studien viber Entwickelungsgeschichte der Thiere., I. 

 Keimblatter und Primitivorgane der Maus. C. W. Kreidel, Wies- 

 baden. 



1884 Studien tiber Entwickelungsgeschichte der Thiere., 3. Die 

 Blatterumkehrung im Ei der Nagethiere. C. W. Kreidel, Wiesbaden. 



SEVERIN, FRIEDRICH 1885 Untersuchungen liber das Mundepithel bei Sauge- 

 tieren mit Bezug auf Verhornung, Regeneration und Art der Nervenen- 

 digung. Arch. f. mikr. Anat., vol. 26, pp. 81-88, 1 pi. Rat included 

 among mammals examined. 



SHERBORN, C. DAVIES 1897 On the dates of the natural history portion of Sa- 

 vigny's "Description de PEgypte." Proc. Zool. Soc. of London, 1897, 

 pp. 285-288. 



SHERRINGTON, C. S. AND COPEMAN, S. M. 1893 Variations experimentally pro- 

 duced in the specific gravity of the blood. J. Physiol., vol. 14, p. 54. 



SHIPLEY, A. E. 1908 Rats and their animal parasites. J. Economic Biol., vol. 

 3, pp. 61-83. 



SIMPSON, F. 1913 Rat proofing; its practical application in the construction or 

 repair of dwellings or other buildings. Pub. Health Rep., Wash., vol. 

 28, pp. 679-687, 10 pi. 



SITTENFIELD, M. J. 1912 Influence of anemia and hyperemia on the growth of 

 sarcoma in the white rat. Proc. Soc. Exper. Biol. and Med., vol. 9, 

 pp. 56-57. 



SLONAKER, J. R. 1907 The normal activity of the white rat at different ages. 

 J. Comp. Neur. and Psychol., vol. 17, pp. 342-359. 

 1912 The normal activity of the albino rat from birth to natural death, 

 its rate of growth and the duration of life. J. Animal Behavior, vol. 

 2, pp. 20-42. 



1912 a The effect of a strictly vegetable diet on the spontaneous ac- 

 tivity, the rate of growth, and the longevity of the albino rat. Leland 

 Stanford Jr. Univ. Pub., Univ. Series. 



SMALL, W. S. 1899 Notes on the psychic development of the young white rat. 

 Am. J. Psychol., vol. 11, pp. 80-100. 



1900 An experimental study of the mental processes of the rat. Am. 

 J. Psychol., vol. 11, pp. 133-164. 



1901 Experimental study of the mental processes of the rat, II. Am. 

 J. Psychol., vol. 12, pp. 206-239. 



SOBOTTA, J. AND BuRCKHARD, G. 1910 Reifung und Befruchtung des Eies 



der weissen Ratte. Anat. Hefte, I Abt., 127 heft (42 band, heft 2), 



pp. 433-492. 

 SOLGER, B. 1889 Saugethier-Mitosen im histologischen Kursus. Archiv f. 



mikr. Anat., vol. 33, pp. 517-518. 

 SOTJLIE, A. H. 1903 Recherches sur le developpement des capsules surre"nales 



chez les vert^br^s superieurs. J. de 1'Anat. et Physiol., vol. 39, pp. 



197-293; 390-525; 492-533; 634-664. 



