Pomona College Journal of Economic Botany 49 



The lime from the slacking vat is strained into this tank through the slanting 

 bottomed strainer (Fig. 21 B). The agitator works by means of a hand lever 

 and the contents of the tank may be thoroughly mixed in a few minutes 

 before it is drawn off for use. Here it is again strained through the strainer 

 shown in Fig. C, as well as is the Milestone. 



The bluestone vat is simply a box containing slats, across the entire box 

 as shown in Fig. 21 D, or simply across one end. These slats must be low 

 enough so that the bluestone, contained in sacks, which is placed upon them 

 will be completely immersed in the water used as the solvent. This method 

 admits quick dissolving of the bluestone, much more rapid than if simply 

 poured into the tank and stirred. 



Figure 21. 



B, slanting-bottom strainer for straining lime into sprayer tank; a, a side view, 

 the screen nailed on a slant at bottom, and b, top view showing shape of box; C, round 

 wire sieve for straining lime into sprayer tank, a, the wooden bottom with hole 

 covered with wire screen, b, cylindrical sides made of fine wire screen tacked around 

 the round bottom and square top, and c, top of strainer; D, box for dissolving bluestone, 

 this being placed on the slats in sacks and under water. 



The lime and bluestone are mixed with a given amount of water so that 

 the proper quantities of the resultant solutions can be measured so as to give 

 the mixture the strength of the above formula. 



The sieve used should be made of brass wire and contain 20 meshes to 

 the inch. 



Mr. Culbertson stated very clearly that the Bordeaux Mixture has given 

 them very satisfactory results. His experience had been extensive. He 

 has used many other sprays, but has discarded all for the Bordeaux. 



