CONTENTS OF No. 146.-New Series. 



MEMOIRS : 



PAGE 



A Re-investigation into the Early Stages of the Development of the 

 Rabbit. By Richard Assheton, M.A. (With Plates 13—17) . 113 



On the Phenomenon of the Fusion of the Epiblastic Layers in the 

 Rabbit and in the Frog. By Richard Assheton, M.A. (With 

 Plate 18) 165 



On the Causes which lead to the Attachment of the Mammalian Em- 

 bryo to the Walls of the Uterus. By Richard Assheton, M.A. 

 (With Plate 19) 173 



The Primitive Streak of the Rabbit ; the Causes which may determine 

 its Shape, and the Part of the Embryo formed by its Activity. By 

 Richard Assheton, M.A. (With Plates 20—22) . . .191 



On the Growth in Length of the Erog Embryo. By Richard As- 

 sheton, M.A. (With Plates 23 and 24) . . . . 223 



