432 BOARD OF AGRICULTURE. [Pub. Doc. 



The lime, salt and ,sul})hur wash, successfiilh' used on the 

 Pacific coast for the scale, when first tried in the east proved 

 a failure. Recently it has been tried again, and with gen- 

 erally excellent results. At the Hatch Experiment Station 

 it })roved to be the l)est of over a dozen different treatments 

 tried. It is somewhat difficult to prepare, however, which 

 is its o-reatest drawback. 



To make it, boil 10 pounds of fresh stone lime and 20 

 pounds of sulphur with 20 gallons of water in a farmer's 

 kettle for an hour and a half, stirring fre<[uently. Slake 30 

 pounds of lime in hot water, and stir in 15 pounds of salt 

 till the last has dissolved. Now add tlie lime and salt to the 

 lime and sulphur, and heat for half an hour. Strain this 

 mixture through burlap into the spray jmmp, and apply to 

 the trees while it is warm. A fuller description of the 

 methods of making and applying these materials, together 

 with their cost, has been published as Bulletin No. 8G of the 

 Hatch Experiment Station, Amherst, Mass., which can be 

 obtained by recjuest. It now seems probable that the salt 

 can be omitted from this mixture without affecting the result 

 injuriously. 



Where a tree is quite thoroughl}^ covered with the scales, 

 it is of little use to try to save it : the sooner it is destroyed, 

 the better, for the sake of the other trees around. 



Thk Oyster-shell Scale. 



[Lejridoxap/ie.^ nhiii Linn.) 



This insect has been in the United States more than a 

 hundred years, and is generally present in orchards and on 

 many of our ornamental and forest trees and shrubs. The 

 scale is much larwr than the San Jose scale, and very different 

 in form, being pointed at one end, rounded at the other, 

 quite long and frequently curved to one side (Fig. 3 b), and 

 is brown or gray in color. 



If one of these scales be lifted in the fall or winter, beneath 

 it from 20 to 100 yellow eggs will be found, besides the dead 

 body of the mother insect under the ])ointed end of the scale. 

 These eggs hatch about the first of June each year, and the 

 tiny yellow young crawl about for a few days, seeking places 



