60 N. S. ENTOMOLOGICAL SOCIETY 



jury produced by excess of lime, apparently cease at about five 

 parts of lime to one of copper sulphate. 



4. For all practical purposes, fruit russetting on the va- 

 rieties tested by us, is eliminated by substituting a spray of 

 sodium polysulphide for the application immediately follow- 

 ing the dropping of the blossom petals in carrying out the regu- 

 lar orchard spraying program. 



5. As a "carrier" for arsenicals, Bordeaux mixture con- 

 taining a high excess of lime, such as 2-10-40 and 3-10-40, 

 formulae, render all arsenical' poisons tested remarkably safe 

 for use on foliage, but on the other hand, they render them very 

 low in killing value. Not less than 1 lb. to 40 gals, of calcium 

 arsenate, analysing from 40-44 per cent AS 2 5 , should there- 

 fore be used in these mixtures. 



6. During the period it has been under observation, ex- 

 cess lime Bordeaux of either the 3-10-40 or 2-10-40 formula, has 

 given, on the whole, better results with less injury, than the 

 mixtures commonly in use. In Nova Scotia and New Bruns- 

 wick it is growing rapidly in favor and many growers will use 

 it in future for three sprays, and many more for at least the 

 fourth spray. 



7. Fruit sprayed entirely with this compound, does not 

 have the smooth waxy finish obtained from the use of sulphide 

 sprays. 



Literature Cited. 



(1) 1887. Millar det & Gay on. Jour. d'Agr. Pract. May 



17, 1887,: 701. 



(2) 1900. Sturgis, W. C. Conn. Agr. Expt. Sta. Sept. 



1900,: 219-259. 



(3) 1906. Waite, M. B. Fungicides and their use in pre- 



venting diseases of fruits. U. S. D. A. Farm- 

 ers Bulletin 243. 



(4) 1907. Pickering, S. U. Jour. Chem. Soc. London. 



Vol. 91 &92,: 1988-2001. 



(5) 1907. Hedrick, A. P. Bordeaux Injury, N. Y. Agr. 



Expt. Sta. Geneva, Bull. 287. 



(6) 1909. Crandall, C. S. Bordeaux Mixture. Univ. 111. 



Agr. Expt. Sta. Bull. 135, : 201-296. 



