88 FUNGICIDES COMBINED WITH POISONS 
Remember that these are the dilutions for summer strength lime 
sulphur to be used on apple trees in leaf, and not for the winter wash, 
which is much stronger. 
The selfoiled lime sulphur is for summer use only, and has nothing 
to do with the winter wash used for scale insects. The method of 
making is as follows: 
Place 20 pounds of lump lime in a barrel and pour over it 3 gallons 
of cold water. As soon as the slaking is well started, add 20 pounds of 
flowers of sulphur, which must be free from lumps. Begin stirring the 
mixture as soon as the sulphur is added. A violent heat will be gen- 
rated by the slaking of the lime, and it is this that brings about the 
desired combination of the two materials. Now add more cold water 
until the mass has the consistency of paste. The boiling will subside in 
from 5 to 15 minutes, and af once more cold water must be added so 
that no further action will take place. There should be none of the red 
liquid that indicates the formation of the chemical compounds charac- 
teristic of the winter wash. The mixture may now be diluted for use by 
adding water until there are 100 gallons alltold. Great care should be 
taken to follow the above directions accurately, for if the boiling is con- 
tinued too long, compounds will be formed that will burn tender foliage. 
In no case should hot water be used instead of cold, either for slaking 
the lime or for the dilutions. 
Arsenate of lead may be added to the summer strength lime sulphur, 
thus providing a combined fungicide and poison insecticide, with 
certain additional properties as a contact insecticide. This applies 
~ either to the diluted concentrate or to the self-boiled lime sulphur. 
