796 



Bordeaux Mixture. 



[JAN., 



under cover, i.e., protected from sun and rain. If stood in a 

 shed, and covered with fairly close-fitting lids — made by 

 nailing sacking round the edges of a wooden lid — 

 such "stock solutions" keep perfectly satisfactorily through- 

 out the spraying season. Two 50-gallon barrels hold 

 sufficient for the making of 625 gallons of Bordeaux 

 mixture; while if the "stock solution" of copper sul- 

 phate be increased in strength to 100 lb. in 50 gallons 

 of water, and another 50-gallon barrel of "stock solu- 

 tion" of "milk-of-lime " is added, these three- barrels will 

 supply enough to make 1,250 gallons of Bordeaux mixture. 

 By storing such "stock solutions," made just before the 

 summer spraying season commences, the grower has the 

 means of obtaining in a few minutes at any time a large 

 supply of Bordeaux mixture of the best quality. 



The making of Bordeaux mixture on a large scale from 

 "stock solutions " is greatly facilitated if some simple "plant " 

 be erected, such as that shown in Fig. 1 . The erection consists 

 of two elevated platforms. The higher platform is carried 

 on four 9 ft. 6 in. posts, 5 in. x 4 in., sunk 2 ft. 6 in. in the 

 ground and well rammed. Joists, 5 in. x 4 in., connect the 

 heads of the posts, into which they are halved. An inter- 

 mediate joist is halved into the middle of two opposite joists. 

 The upper platform is 5 ft. square, and consists of 6 in. x 1 in. 

 boarding in the rough, laid to the edges. The lower platform, 

 which is 6 ft. 6 in. square, is similarly constructed, and is 

 carried on sleepers, 6 ft. long and 10 in. by 5 in., set vertically 

 and sunk 2 ft. 6 in. in the ground and well rammed. The 

 two structures are bolted together at the two back posts and 

 where the front post of the higher platform touches the joist 

 of the lower platform. 



On the higher platform are two 50-gallon "dilution barrels," 

 marked inside at the 50-gallon level, and fitted with taps. If 

 possible, water should be laid on to this higher platform 

 (note end of hose in Fig. 1). On the lower platform stands a 

 vat (fitted with a tap) capable of containing 100 gallons. A 

 short length of hose ("canvas hose" is convenient to use) is 

 fitted to the taps of the "dilution barrels " and of the ioogallon 

 vat. The process of making 100 gallons of Bordeaux mixture 

 is as follows : — Eight gallons of the "stock solution" of "milk- 



