Fumigation investigations in California . Fig. 23.—Cart used with the improved system of fumigation. (Original.) nized-iron basin like that shown above the keg in figure 23, having anopening at the bottom fitting into the bung of the keg. make- a verysatisfactory funnel for filling the keg. The acid may be held in anearthenware jar or a lead-lined tank, with cover firmly attached toprevent slopping. By way of a cover for the earthenware jar we have used a lead-lined lid. which fits tightly within the top (fig. 24). At the center ofthis lid is an opening about 6 inches in diameter, around the c
Fumigation investigations in California . Fig. 23.—Cart used with the improved system of fumigation. (Original.) nized-iron basin like that shown above the keg in figure 23, having anopening at the bottom fitting into the bung of the keg. make- a verysatisfactory funnel for filling the keg. The acid may be held in anearthenware jar or a lead-lined tank, with cover firmly attached toprevent slopping. By way of a cover for the earthenware jar we have used a lead-lined lid. which fits tightly within the top (fig. 24). At the center ofthis lid is an opening about 6 inches in diameter, around the circum-ference of which is attached a leaden tube which extend- downwardseveral inches and prevents the slopping of acid through the lead-lined cover lit- into the top of this tube. This opening in theer is for use in filling the jar. AN [MPROVED SYSTEM. 61. Very few metals will withstand sulphuric acid without corrodingFor this reason all the common types of faucets are practicallyworthless for drawing acid. There isno faucet on the market thai is alto-gether satisfactory for this purpose,although at the present time a manu-facturing firm on the Pacific coast isexperimenting in the hope of perfect-ing the necessary article. We havemei this difficulty in an entirely prac-tical manner by attaching a three-quarter inch iron pipe to the lowerside of the jar and regulating the flowof acid by means of a large pinchcockplaced on a short piece of rubber tub-ing at the end of the pipe (fig. 2 1. 1, 5). The How of acid is rapid andeasy to control. Pure rubber is mostsatisfactory and a fresh piece shouldbe substituted about every other night. The water is drawn from a order that this may he drawn onthe same side of the cart as the acid,a pipe of the character shown in figure23 is required. The faucet shouldhave an opening of about t
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectfumigation, bookyear1
