i v CONTENTS. 



No. 2. September, 1897. 



I. MARY M. STURGES. 



Preliminary Notes on Distomum Patella re . S7 



II. C. M. CHILD. 



A Preliminary Account of the Cleavage of 

 Arcnicola Cristata, with Remarks on the 

 Mosaic Theory 71-86 



III. C. M. CHILD. 



Centrosome and Sphere in Cells of the Ova- 

 rian Stroma of Mammals. A Preliminary 

 Communication 7~94 



IV. SAMUEL J. HOLMES. 



Preliminary Account of the Cell Lineage of 



Planorbis 95-101 



V. JAMES G. NEEDHAM. 



The Digestive Epithelium of Dragonfly 

 Nymphs 103-113 



No. 3. -- October, 1897. 



I. J. PLAYFAIR McMuRRicn. 



Contributions on the Morphology of the 



Actinozoa 115-122 



II. EMILY RAY GREGORY. 



Origin of the Proncphric Duct in Selachians 123-129 



III. O. P. HAY. 



Dr. Gadow and Miss Abbott on the Vertebral 



Column of Fishes . . . . . . . . 131-141 



IV. MAYNARD M. METCALF. 



The Xcural Gland in Ascidia Atra . . . 143-146 



V. LA\YRENCE E. GRIFFIN. 



Notes on the Anatomy of Nautilus Pompilius 147-162 



