DEVELOPMENT OF GERMINAT LAYERS IN MAMMALS. 401 
38. Rauser.— Die Entwickelung des Kaninchens,” ‘ Sitzungsberichte der 
Naturforschenden Gesellschaft,’ 1875, pp. 103—109. 
39. H. Ravn.— Ueber die mesodermfreie Stelle in der Keimscheibe des 
Hihnerembryo,” ‘Archiv fiir Anatomie und Physiologie, Anat. Abth.,’ 
1886, pp. 412—420, Taf. xxi. 
40. A. Roprnson and R, AssHeton.—‘‘ The Formation and Fate of the 
Primitive Streak, with Observations on the Archenteron and Germinal 
Layers of Rana temporaria,” ‘Quart. Journ. Micr. Sci.,’ N. 8., 
1891, pp. 451—504, plates xxxiv, xxxv. 
41. A. Ropinson.—‘ Observations on the Development of Two Rodents,’ a 
Thesis presented to the University of Hdinburgh for the degree of 
M.D., 1890, for which a Gold Medal was awarded by the Faculty of 
Medicine. 
42. A, Roprnson.—‘Some Points in the Development of Mus musculus 
and Mus decumanus,’ read at the British Association meeting at 
Cardiff, 1891. 
42a. A. Ropinson.—“ On the Nutritive Importance of the Yolk-sac,” 
‘Journal of Anatomy and Physiology,’ April, 1892. 
43. H. A. Scuarer.— Description of a Mammalian Ovum in an Karly Con- 
dition of Development,” ‘ Proceedings of the Royal Society of 
London,’ 1876. 
44. H, Serenxa.—‘ Keimblatter und Primitivorgane der Maus,’ Wiesbaden, 
1883. 
45. H. Sevenxa.—‘ Die Blatterumkehrung im Hi der Nagethiere,’ Wiesba- 
den, 1884. 
46. EH. Srnenxa.—‘ Das Opossum,’ Wiesbaden, 1886-7. 
47. A. E. Suiptey.—‘‘On some Points in the Development of Petromyzon 
fluviatilis,” ‘Quart. Journ. Micr. Sci.,’ N. 8., 1886, pp. 325—370, 
plate xxvii. 
48. T. W. Suors anv J. W. Pickertnc.—“ The Proamnion and Amnion in 
the Chick,” ‘Journal of Anatomy and Physiology,’ 1890, pp. 1—21, 
plate 1. 
49. H. Srrant.— Beitrage zur Hntwickelung der Reptilien,” ‘ Archiy fiir 
Anatomie und Physiologie, Anat. Abth.,’ 1883, pp. 1—43, Taf. i. 
50. H. Srrant.— Die Dottersackwand und der Parablast der Eidechse,” 
‘ Zeitschrift fiir wissen. Zoologie,’ Bd. xlv, 1887, pp.282—307, Taf. xvi. 
50a.—H. Srraut and F. Cartus.—“ Beitrage zur Entwickelungsgeschichte 
des Herzens und der Korperhohlen,” ‘Archiv fiir Anatomie und 
Physiologie, Anat. Abth.,’ 1889, pp. 231—248, Taf. xv. 
51. A. Tarant.— La Fécondation et la Segmentation étudiées dans les 
(ufs des Rats,” ‘ Archives Ital. de Biol.,’ 1889, pp. 112—117. 
