SEVENTH ANNUAL YEAR BOOK— PART X. 499 



The doses of this 1 per cent mixture recommended by Stiles are as 

 follows: 



Lamb i to 13 months old 2 to 4 ounces 



Yearling sheep and above 3 to 5 ounces 



Calves 3 to 8 months old 5 to 10 ounces 



Yearling steers 1 pint 



Two-year-olds and above 1 quart 



Serious objections to the use of coal-tar creosote have been found in that 

 the substance known by this name varies considerably in composition and 

 in that some trouble is often experienced in obtaining it in many parts of 

 the country. Complaints have been made that the substance dispensed 

 by some druggists as coal-tar creosote has failed to give satisfactory 

 results. 



BLUESTONE. 



Bluestone, or copper sulfate, has been extensively used in South Africa 

 in the treatment of sheep for stomach worms and is recommended by the 

 colonial veterinary surgeon of the Cape Colony as the best and safest 

 remedy. His directions are to take 1 pound avoirdupois of pure blue- 

 stone, powder it fine, and dissolve in 42 whisky bottlefuls (9i/^ United 

 States gallons) of warm water. It is better to first dissolve the bluestone 

 in 2 to 4 bottlefuls of boiling water, then add the remaining quantity in 

 cold water, and mix thoroughly. This solution is given in the following 

 sized doses: 



Lambs 3 months old % ounce 



Lambs 6 months old 1% ounces 



Sheep 12 months old 2^2 ounces 



Sheep IS months old 3 ounces 



Sheep 2i months old 3% ounces 



In making up the solution only clear blue crystals of bluestone should 

 be used. Bluestone with white patches or crusts should be rejected. It 

 is especially important that the bluestone and water be accurately weighed 

 and measured, and that the size of the dose be graduated according to the 

 age of the sheep. 



GASOLINE. 



Gasoline is one of the most popular remedies for stomach worms which 

 has been used in this country and has the particular advantage of being 

 readily obtained. It is important to repeat the dose if the gasoline treat- 

 ment is employed, and it is usual to administer the. treatment on three 

 successive days, as follows: 



The evening before the first treatment is to be given the animals are shut 

 up without feed or water and are dosed about 10 o'clock the next morning. 

 Three hours later they are allowed feed and water, and at night they are 

 again shut up without feed or water. The next morning the second dose 

 is given, and the third morning the third dose, the treatment before and 

 after dosing being the same in each case. 



