10 



Bordeaux Mixhire and Plants 



connection, it was essential to obtain apple foliage known to be entirely 

 undamaged. As is generally recognised, it is almost impossible to find 

 any number of apple leaves, when grown under ordinary conditions, 

 which are really free from minute injuries of some sort or another. It 

 was therefore found necessary to grow foliage specially protected from 

 liability to injury. With this object, a number of one year old apple 

 seedlings in small pots were carefully cleaned before the leaf buds 



Fig. 1. Foliagf undamaged and treated with " no-exccss-lime " Bordeaux mixture. 

 Fig. 2. Foliage damaged witli seratohe.s and outs and sprayed with water. 



opened and each one enclosed in a muslin cage supported on a light 

 frame. The plants were kept in a cool greenhouse and the new foliage 

 put out was thus almost completely protected from the chance of damage 

 by bruising or by insect attacks. A few leaves on some of the plants 

 were slightly attacked by apple mildew, but these were always removed 

 before starting an experiment. 



