152 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



cover it. As soon as the lime begins to slake the sulphur should be 

 added, after first running it through a sieve to take out the lumps. 

 The mixture should be constantly stirred, and more water added as 

 needed to form a thick paste at first, and then gradually a thin paste. I 



The lime will supply enough heat to boil the mixture several j 

 minutes. When well slaked, water should be added to cool the 

 mixture and prevent further cooking. It is then ready to be strained 

 into the spray tank, diluted, and applied. Care must be taken not to I 

 allow the boiling to proceed too far, as some of the sulphur will then j 

 go into solution, forming sulphides, which are injurious to the foliage, i 

 The intense heat, violent boiling, and constant stirring results in a I 

 uniform mixture of finely divided sulphur and lime, with only a very ! 

 small percentage of sulphur in solution. This mixture should be 

 applied immediately after it is made with a good spraying outfit 

 equipped with an agitator, Vermorel nozzles, &c. 



Experiments with the above have been carried out for three years, j 

 and have included tests on peach brown rot, peach scab, cherry leaf | 

 spot, apple scab, apple leaf spot, sooty mould, bitter rot, and apple j 

 blotch, with various varieties of peaches and apples. 



In addition to controlling the brown rot and the scab without injury 

 to the foliage, the fruit sprayed with the self-boiled lime-sulphur was 

 larger, more highly coloured, presented a much better appearance in 

 the package, carried to market better, and commanded a higher price 

 than the unsprayed fruit. However, there is some danger of staining 

 the fruit if the mixture is applied within two or three weeks of the 

 ripening period. 



The experiments so far have been of doubtful value in controlling 

 apple blotch and bitter rot. Two pounds of arsenate of lead added to 

 every fifty gallons of the self-boiled mixture proved of value in con- , 

 trolling the codling moth, and was entirely harmless to the apple 1 

 fohage. — A. A. K. 



Limes in the New York Market, British West Indies. By 



W. N. Sands {West Indian Bull. vol. xi. No. 2, 1911).— At present | 

 Dominica supplies the best limes to the New York market. Their 

 consumption is rapidly increasing, and, given certain essential points 

 of improvement in the supply from the other West Indian islands, 

 there is no reason why they should not control the market in this . 

 particular fruit, as there is little fear of competition at present. 



But attention is especially required in the following matters : The 

 limes should be carefully picked, cured, and graded. Those discoloured 

 with earth or blight should be brushed or washed without injuring the 

 skin, thoroughly dried, and then wrapped in brown paper. They shouldj 

 be graded as far as possible to the required size that happens to be m 

 popular demand, and the fruit should be packed closely in layers iiJ 

 well-ventilated barrels. 



Shipping facilities from islands other than Dominica need improve- 

 ment. — C. H. L. 



