PROCEEDINGS, 1917. 17 



the following spray program which Prof. Brittain and I have laid out, yet we realize that 

 we have not yet got our materials perfect. We know that we are on the right track but 

 have not finished our work. The farther we go into the program of spraying material, 

 the less we seem to know. We spent about half a day writing our spray calendar for 

 1916 and were both mortally sure that it was perfect. We spent about a month writing 

 our calendar for 1917 and were quite sure when we published it that it was just right. 

 We will spend half our time this year thinking of and preparing our 1918 calendar and 

 when we finish we will be certain that there are many things about it that are not just 

 right. 



The results that I have outlined have necessitated some hundreds of feeding and 

 field experiments and many more will have to be conducted before we have our spray 

 calendar as nearly perfect as we desire. On account of the orchard interests of Nova 

 Scotia being more dependent on thorough and intelligent spraying than any other indus- 

 try in the province, we have up to date spent more of our time on orchard sprays than 

 on any other line of work. Since the potato crop has jumped into prominence and the 

 conserving of that crop has become a question of national necessity, we have carried on 

 wdth a great measure of success a campaign for more potato spraying and have this year, 

 not only more apple spraying being done than ever before, but infinitely more potato 

 spraying than ever before. 



