81 



statement is true. The ground should be gone over and the dead and 

 dying branches and twigs of the trees should be collected. The insects 

 mature in them. 



Dr. Collins: Would you advocate pruning often? 



Dk. Brooks: No. 



Adjounnnent to lecture hall. Mr. Henry Hicks of Westbury, 

 Tong Island, gave a talk on the transplanting of large trees by his 

 methods, illustrated with lantern slides. This was followed by a talk 

 with lantern slides, on 



HEREDITY IN TREES AND PLANTS 



By Dr. A. F. Blalceslee, New York 



Dr. Blakeslee said in part: 



One of the first things we notice as we go out into the open is 

 c'iversity in the habits of trees and plants. It is through the details 

 thus presented that we are able to distinguish one species from another. 

 \ ou can see this diversity the year round in nut trees, and in the 

 nuts. 



If you arrange nuts, or any other objects for that matter, in a 

 curve according to size, you will fiud that the most numerous of them 

 r.re of about the average size. This is equally true when applied to 

 mankind. What is the reason? 



There are a number of factors alfecting! this, but, in general, there 

 are two main causes — environment and heredity. We do not know 

 which is the more important but both are absolutely necessary. 



In the picture being shown we see the influence of the black wal- 

 nut upon plants around it. It creates an environment which influ- 

 ences the ability of other plants to grow near the roots. 



It must be remembered, however, that what the animate plant 

 transmits is not the actual character in question, but the ability of the 

 animate plant to develop characteristics. By placing the plant near a 

 black walnut tree we do not aft'ect anything but the capacity of the 

 plant to develop in certain directions. 



I have shown here a diagram to illustrate a certain stock fertiliza- 

 tion. Here we have the plant with its stamen and pistils, the egg 

 cells and the pollen. There are two types of pollenization, one where 



