-158 J iiiinial of Agriculture, Vicforia. [10 March. 1912. 



Boil slowly, stirring meanwhile for hali-an-]-iour until the arsenic is all 

 dissolved; then add water to make thf mixture measure 3 gallons; let 

 -sediment settle and decant clear liquid or pour it quietly off. Bury or 

 •otherwise destroy sediment. 



Dosage. — For groicn sheep — i fluid ounce (two tablespoonfuls) the three 

 j^allons sufficing for 480 grown sheep. For zvemiers — Add one gallon of 

 water, making four gallons, which, with a dose of one ounce, will suffice 

 for 640 weaners For lambs — Add water to make 5I gallons, which, with 

 a dose of one ounce, will suffice for 880 lambs. 



The greatest care and exactness should be exercised in preparing and 

 measuring the drench. The arsenic should be ordered in packages which 

 •do not require breaking or re-weighing and the quantity prepared should 

 •correspond to the number of sheep to be drenched. The mixture should 

 be frequently shaken while drenching, 



(2) Turpentine drencli — For lung worm {Filaria tnonchialis) or 

 ^{strongylus filaria). 



Rectified oil of turpentin'e, i oz. 

 Milk or white of egg, 2 ozs. 



or Rectified oil of turpentine, Linseed oil and starch gruel of each 



1 oz. 



Dose. — Grown sheep, 3 ozs. ; weaners, 2 ozs. ; lambs, i| ozs. If the 



-sheep are weak the dose to be proportionately reduced. The turpentine 



•drench has also been found to be very effective for stomach and intestinal 



worms. 



(3) Thymol drench. — In view of the great success which has recently 

 attended the treatment of allied forms of intestinal worms in man with 



thymol, this drug is worthy of a trial for stomach worms in sheep. The 

 •dose for a sheep would be from 5 to 20 grains according to age and con- 

 ■dition and it should be given dissolved in half an ounce of turpentine 

 and diluted with about two ounces of milk or linseed oil. 



Directions for Drenching. — The sheep .should be yarded on the 

 ■evening before the morning on which the drenches are to be given and 

 kept without food. They must be drenched on an empty stomach and 

 kept away from food and water for three hours at least after thev are 

 ■drenched. One drenching will often suffice, but if no improvement occurs 

 repeat in a lortnight. If the sheep continue to show signs of Avorms 

 "drench every two months. 



Intra- tracheal Injection for Lung Worm. — This direct method of 

 treating lung worm is certainly very tedious, but equally certainly it is 

 very effective, and may be adopted with advantage over all other methods 

 of treatment when small lots of sheep are concerned or in the case o-f 

 valuable studs. Its efficiency lies in the fact that the medicaments used 

 have a chance of coming intO' actual, and therefore destructive, contact 

 with the worms lodged in the air passages. Coughing fits are also pro- 

 moted by which the worms are dislodged and expelled. The operation 

 is comparatively simple but requires care — otherwise the losses may be 

 considerable. 



To operate the sheep is " turned," set on its rump and held between 

 the knees of a standing assistant with its head and neck outstretched. 

 The wool must be carefully " parted " in the middle line of the throat 

 midway down the neck, an incision lengthways of the windpipe and about 

 an inch long is then made with a sharp blade down on to the rings of 



