138 THE CONNECTICUT POMOLOGICAL SOCIETY. 



tion to allude briefly to the work of Professor Horton in Del- 

 aware, and Professor Alwood in Virginia, both of whom made 

 studies of the lime-sulphur washes, employing tests for alka- 

 linity, for soluble sulphur and specific gravity, and their work 

 in the main may be said to harmonize with our conclusions ; 

 namely, that very little is to be gained by more than thirty 

 minutes' active boiling. 



To make a long story short, it may be said that we have 

 tried many laboratory and field experiments with varying 

 quantities of lime and sulphur, with and without salt, and with 

 a varying length of boil from thirty minutes to over two hours 

 or more. The practical results have been that a relatively 

 small amount of sulphur with a slight excess of lime, boiled 

 actively for thirty minutes and then diluted with cold water, 

 has in every instance given as good satisfaction as a wash 

 prepared by the more laborious methods at first insisted upon. 



A number of experimenters have arrived at the same con- 

 clusions. It is interesting to refer briefly to the work of the 

 Georgia State Board of Entomology as published in Bulletin 

 14, issued last November. Professors Newell and Smith 

 have been working along similar lines and their conclusions 

 and ours are almost identical in most respects. Last fall Pro- 

 fessor Parrott, of the State Agricultural Experiment Station, 

 and the writer examined each other's experimental areas and 

 went over the subject carefully. As a result of this confer- 

 ence and comparison of data, we decided in the interests of 

 unity to recommend a certain formula, which we knew to be 

 good, even though others might be just as effective. The pro- 

 portions are as follows : 20 lbs. of good lime, 75 lbs. of sulphur 

 to 50 gals, of water ivith at least thirty minutes' active boiling, 

 with the employment of salt optional. There are several 

 methods of preparing this wash, and where it must be made 

 in an iron kettle very satisfactory results have been obtained 

 as follows : Several pails of water are brought nearly to a 

 boil, the lime added, and as soon as slaking begins the sulphur 

 is put in and the whole mixture violently stirred and kept 

 boiling for at least thirty minutes. This should result in pro- 

 ducing a wash with a deep brick red color or even greenish 

 tinge. The mixture should then be strained through mos- 

 quito netting or something of equal fineness, and in our exper- 



