20 



a resin wash of six times the normal summer strength. The effects 

 following the application of these washes leave notliingtobe desired. 

 In all cases the most ' careful search over the sprayed trees has 

 failed to show a living scale," These are known as " winter washes," 

 since they can only be used during the winter without serious injury 

 to the trees. The winter resin wash mentioned above is composed 

 of resin, one hundred and twenty pounds ; caustic soda, thirty 

 pounds ; fish oil, fifteen pints ; water sufficient to make o-ne hundred 

 gallons. The resin and soda are broken up and placed in a large 

 kettle with the oil and sufficient water to cover them ; the whole is 

 then boiled for several hours, or until the compound will properly 

 mix in water without breaking up into yellowish flakes. Experiments 

 thus far made with applications during the summer have failed to give 

 a substance that will destroy all of the insects. As good results 

 have been obtained from the use of ordinary kerosene emulsion as 

 from any other substance. It was found advisable, however, to 

 repeat the spraying at intervals of about a week, as the young are 

 brought forth in succession during the season. 



LEGISLATION. 



It is strongly recommended by some entomologists to have laws 

 passed requiring nurserymen and other dealers to guarantee their 

 stock free from the San Jose scale ; but I am free to confess that 

 I feel very doubtful about this matter. It seems to me that the fear 

 of loss of trade will be a greater incentive to send out only uninfested 

 stock than the fear of anv amount of legislation. 



