Contents of Vol. 1, No. 3. 



» PAGE; 



I. A Chemico- Physiological Study of Spirogyra nitida. By Mary E. 



Pennington, Ph. D 203 



II. On the Structure and Pollination of the Flowers of Enpatorium 

 ageratoides, and Eupatorium ccelestinum. By Laura B. Cross, 

 Ph.D. (with Plate XVIII.) 260 



III. Contributions to the Life-History of Amphicarpcea monoica. By 



Adeline F. Schively, Ph. D. (with Plates XIX.-XXXVI.) ... 270 



List of Publications at the close of this number. 



Orders for single numbers or complete sets of the Publications should be 

 sent direct to J. Hartley Merrick, Assistant Secretary, College Hall, 

 Station B, University of Pennsylvania, Philadelphia, Pa. 



