ELECTRICAL CONNECTIONS 



177 



Nor can there be any doubt that the stalk of the Horse 

 Chestnut is intended to carry a considerable quantity of 

 current. 



We can obtain a better view of it by stripping the leaves. 

 They are, as will be seen, tapped off a central boss. 



Horse-Chestnut Venation. 



122 



In Figure 121 there are only five leaves. Figure 

 has six and therefore the Stalk is a little thicker. 



That, I think, should convince the reader, but in case 

 it does not we will take some Apples from the tree. They 

 are young yet but will serve our purpose. 



yv23 



Apples — in Parahei,. 



I have cut off the leaves. There were eleven of them and 

 the stalk is quite thick. 



The flowers of the Geranium are in Parallel and if you 

 look at them you will find that the diameter of the stalk 

 increases with the number of flowers it has to support. In 



