FUNGI. 27 



with water until no harm follows its use. These spraying com- 

 pounds are beneficial, not only to the leaves of trees and plants, 

 but also to the fruit. Paris green added to Bordeaux mixture, in 

 the proportion of one pound of the former to one hundred gallons 

 of the latter, will destroy the codling moth ( Carpocapsa pomo- 

 nelJa). For this purpose, spraying with Bordeaux mixture and 

 Paris Green should be commenced early, and the Bordeaux 

 mixture alone can be safely continued to within one month of the 

 picking season. Spraying with ammoniacal solution of copper 

 carbonate may then be kept up to within two or three weeks of 

 gathering the fruit. Paris Green cannot be safely used with the 

 latter fungicide, since the arsenite is soluble in ammonia and will 

 burn the leaves. 



Speaking of the popular dread of being poisoned by eating fruit 

 from trees or vines that have been sprayed with Bordeaux mixture. 

 Dr. Sturgis said that one would have to eat six tons of grapes — 

 stems included — to get an effective dose of the copper salt. If, 

 owing to excessive or too late applications of Bordeaux mixture, 

 the fruit shows traces of the fungicide at the time of harvest it 

 may be cleaned by dipping it into a weak solution of acetic acid or 

 vinegar. A better way, however, is to use the ammonia solution 

 in place of the Bordeaux mixture for the last two applications. 

 This dread of being poisoned by American fruit was during 

 several years quite prevalent in Great Britain, and on one occa- 

 sion, when a shipment of apples which were packed in second- 

 hand flour barrels, arrived, the flour remaining in the barrels was, 

 at first, believed to be white arsenic from American spraying 

 mixtures. 



A vote of thanks to Dr. Sturgis for his admirable lecture was 

 unanimously passed. 



In his acknowledgment of this vote Dr. Sturgis said he con- 

 sidered it a great honor to be called to deliver a lecture before the 

 Massachusetts Horticultural Society. 



The announcement for the next Saturday was a paper upon 

 ^'Pruning," by Edwin Hoyt, of New Canaan, Conn. 



