CONTENTS OF No. 150.—New Series. 
MEMOIRS: 
On the Distribution of Assimilated Iron Compounds, other than 
Hemoglobin and Hematins, in Animal and,Vegetable Cells. By 
A. B. Macatium, B.A., M.B., Ph.D., Associate-Professor of Phy- 
siology, University of Toronto. (With Plates 10—12) 
On the Structural Changes in the Reproductive Cells during the 
Spermatogenesis of Elasmobranchs. (From the Huxley Research 
Laboratory, Royal College of Science, London.) By J. E. S. 
Moort, A.R.C.S. (With Plates 13—16) . A ; 
Notes on the Fecundation of the Egg of Spherechinus granu- 
laris, and on the Maturation and Fertilisation of the Egg of 
Phallusia mammillata. By M. D. Hitt, B.A.Oxon. (With 
Plate 17) ; ‘ : 
Further Remarks on the Cell-theory, with a Rel to Mr. Bourne. 
By Apam Sepewick, F.R.S. { : 
PAGE 
175 
275 
315 
331 
