CHORIO-ALLANTOIC GRAFTS. 315 



Roux, Wm. 



'88 Ueber das kiinstliche Hervorbringen halber Embryonen durch Zerstorung 

 einer der beiden ersten Furchungskugeln, u.s.\v. Yirchow's Arch., CX\"I. 

 Spemann, H. 



'10 Die Entwickelunj; des invertierten Horgriibchens zum Labyrinth. Roux's 



Arch.. XXX. 



'12 Zur Enuvickelung <]a \YirbeItierauges. Zool. Jahrb., XXXII. 

 Streeter, G. L. 



'07 Some Factors in the Development of the Amphibian Ear Vesicle and 



Further Experiments on Equilibration. Journ. Exp. Zoul., IV. 

 '14 K.\| rimental Evidence Concerning the Determination of Posture of the 

 Membranous Labyrinth in Amphibian Embryos. Jour. Exp. Zool., XVI. 



I wi*h hen.- t-i ay thanks to Mr. Kenji Toda for the preparation of 



the figu: 



