OF THE TONGUES OF THE MAMMALIA. l5S 



24. PococK, R. I. — Ann. & Mag. Is^at. Hist. 1917, vol. xx. 



pp. 329-350. 



25. PoDWisoTSKY, Y. — " Anat. Untersuch. uber die Zungen- 



driisen." Diss. Dorpat, 1878. 



26. PouLTOaN, E. P. — Quart. Joui-n. Micros. Sci. vol. 36, p. 143. 



27. ScHAVALBE, G.— Arcli. f. mikr. Anat. 1868, pp. 154-187. 



28. Severin.— Arch. f. mikr. Anat. 1885, pp. 81-88. 



29. SoNNTAG, 0. F.— Proc. Zool. Soc. 1921, pp. 1-29, 277-322, 



497-524, 741-767. 



30. SoNNTAG, 0. F.— Proc. Zool. Soc. 1922, pp. 639-657. 



31. TucKEEMAN, F. — Several papers quoted by Oppel (see no. 23). 



32. Ebnee, von. — Several papers quoted by Oppel (see no. 23). 



33. Watson and Young.— Proc. Zool. Soc. 1879, pp. 79-107. 



34. Schacht, E. 0. — "Zur Kenntnis der secernierenden Zellen, 



etc." Diss. Kiel, 1896. 



35. Young and Robinson. — Journal of Anatomy and Physiology, 



1889, pp. 187-200. 



