DISEASES OF FARM ANIMALS I47 



pears suspicious it should be substituted with 

 wholesome food. To relieve the ardent thirst 

 and assist recovery, a teaspoonful of the crystals 

 of iodine should be given in a ball of linseed or 

 other pasty material. It may be desirable to repeat 

 this in three or four days. Also give in the drink- 

 ing water 4 tablespoonfuls of bicarbonate of soda 

 three times daily. 



DIARRHOEA.— See Dysentery. 



DIFFICULT PARTURITION.— See Obstet- 

 rics. 



DIPPING LIVE STOCK.— There are only two 

 satisfactory methods of treating animals with a dip. 

 The first is hand treating, where the number of 

 animals are few and easy to handle. In hand treat- 

 ing the animal the dip is applied with scrubbing 

 brushes, sponges, etc., and all parts of the body 

 liable to infection should then be thoroughly and 

 vigorously rubbed. If hand treating is properly 

 performed it is an excellent method. The second 

 method consists of immersing the diseased animals 

 in the dipping solution. There are two forms of 

 vats in use for this purpose. The cage vat is 

 designed for comparatively few cattle. As its name 

 implies, it consists of a cage in which the animal 

 is placed and then lowered into a vat containing 

 the dip. Where a large number of animals are to 

 be dipped, the swimming vat is very popular. The 

 animals are forced to pass through the vat, which 

 contains sufficient dip to completely immerse them 

 when they plunge into the solution. 



The coal-tar dips are made from some of the 

 products of the distillation of coal tar. When 

 mixed with water they form a milky emulsion, 

 having a strong odor of coal tar. The coal-tar 



