iV CONTENTS. 
No. 2. — February, 1897. — (Continued.) 
PAGES 
III. GWENDOLEN FouLKE ANDREWS. 
Some Spinning Activities of Protoplasm in 
stavjish and Echinus Egos. |. aus Of=36O 
IV. A. D. MEap. 
The Origin of the Egg Centrosomes. . . 391-394 
V. FRANKLIN P. MALL. 
Development of the Human Coelom . . . 395-453 
VI. Hermon C. Bumpus. 
A Contribution to the Study of Variation . 455-484 
No. 3. — March, 1897. 
I. Epwarp PuHEtps ALLIS. 
The Cranial Muscles and Cranial and First 
Spinal Nerves in Amita Calva. . . . 487-808 
II. KATHARINE Foot. 
The Origin of the Cleavage Centrosomes . 809-814 
Che Atheneum Press, 
GINN & COMPANY, BOSTON, U.S.A. 
