480 



Journal of Agriculture, Victoria. [10 Avn., 1918, 



and all the mixtures were carefully prepared and tested. We would 

 point out to growers the importance of testing their spray mixtures, as 

 acid mixtures are very liable to burn, and russeting is largely due to 

 their use. 



It is unnecessary to give details of all the tests, nor would it be 

 of any educational value. 



Spraying a Pear Tree for the Second Time. 



In conducting experiments of any kind in the field, it is absolutely 

 essential to extend them over a series of years before any conclusions can 

 be drawn from them, as so many factors have to be considered ; and, 

 though we know we have not exhausted the subject, our results on " Leaf 

 Curl " have been so uniformly good since the com.mencement, and as 

 those on " Black Spot " have been improving all the time, we feel justi- 

 fied, owing to our excellent results last season (1917-18) in giving a short 

 paper on the subject. 



