230 Macfm-lanc — TIic Beach Plum. 



high scientific value of experimental stations for the study of 

 plant life. Experiments are now in progress that may aid 

 somewhat the solution of these problems. 



EXPLANATION OF PLATES XX, XXI. 



Plate XX. Branch of Beach Plum, belonging to form No. 6. Reduced one- 

 fourth. 



Plate XXI. Branch of Beach Plum, belonging to form No. 4. Reduced 

 one-half. 



