INJECTION TREATMENT FOR MILK-FEVER 341 



importance to the dairy industry of the country, as an almost 

 certain means of saving the best milking animals from a 

 deadly disorder, illustrations of the mechanism with full 

 description in Dr Watney's own words are here introduced 

 from the Agricultural Handbook and Diary, 1905. 



" This apparatus, Fig. 19 (a), is composed of (A) a small 

 india-rubber bag (with a valve), which can be compressed by 

 hand, and acts as a little air-pump this pump is connected 

 with a second rubber bag (B), which under pressure can 



FIG. 19 (a). 



expand so as to equalise the pressure, and which also pre- 

 vents too much force being used. This elastic bag is con- 

 nected by the rubber tubing (C) with one nozzle of a metal 

 cylinder (D) into which antiseptic wool is placed at the 

 other end of the cylinder is a cap (D') which screws on and off 

 so that the wool can be put in the cylinder on the outside of 

 the cap is a nozzle so that by the tubing (E) the cylinder is 

 connected with the hollow milking metal tube (f) sometimes 

 called a " syphon " for passing into the teat. The length of 

 the whole is about four feet 



" On to the cylinder is attached a hook (D"), so that the 

 cylinder can be hooked on to the inside of a pail filled with 



FIG. 19 (3). 



D filled with Carbolized Cotton Wool 



water at a temperature of 150 to 160 F., and thus in very 

 cold weather, if the injection is made somewhat slowly, the 

 air pumped into the udder can be somewhat raised in tempera- 

 ture. To prevent any possibility of the cotton wool being 

 pumped into the udder, there is a small contrivance attached to 

 the inside of the screw cap (D') of the cylinder, Fig. 19 (). 

 " This consists of (g) a small cylindrical piece of metal, 



