40 



N. S. ENTOMOLOGICAL SOCIETY. 



EFFECT OF CHEMICALS ON PUPAE 1916-1917. 



SPRAYING EXPERIMENTS 



The spraying experiments that had previously been carried on over three seasons 

 were discontinued this year, but in some cases the work was carried on by the owners. 

 Though it was impossible to make such large counts as in previous seasons, it was ap- 

 parent that the results were satisfactory. Especially satisfactory were the results in 

 one of our check orchards where the infestation last year ran from 63 per cent in the 

 least susceptible variety to 85 per cent in the most susceptible variety. Counts made 



