112 VETERINARY PARASITOLOGY 
Some practitioners use iodine. The process is as 
follows: Two sacks are obtained; one is placed inside 
the other, and both are immersed in a bucket of water, 
thoroughly wetted, and wrung out. A brick made hot 
in the fire is then dropped into the bottom of the sack, 
and as much iodine as can be held on a threepenny-piece 
is dropped on to it. The head of the calf is enveloped 
in the sack, and held there till the animal has coughed 
twice. 
This method is highly recommended by those who 
practise it, but, like all fumigation methods, it is open 
to the objection that the worms, especially in the later 
stages of the disease, often possess greater vitality than 
do the calves themselves. 
2. Tonics.—Preparations of iron, sodii chlorid., quassia, 
or gentian, and aromatics, are useful to maintain strength 
and condition in the early stages. 
The following is useful : 
BOL tereb. os ss #s .. Biij. 
Asafeetide  .. . ai .. Bj. 
Chloroformi .. = eK .. Bvj. 
Acid. carbol. .. a a .. Bij. 
Aqua calcis  .. is as .. Bvy. 
Ol. lini. ee 3 .. O.j.ss. 
M. Fiat mist. Sig.: One to two wineglassfuls to be given 
twice daily in gruel to each calf, according to age. 
This method is only applicable when the number of 
animals affected is comparatively small. 
3. Intratracheal Injection.—This is one of the best 
methods of treatment. A very useful injection is as 
follows : 
BR Ol. tereb. Ns = ae .. 3.88. 
Chloroformi | 
Glycerini | os aa 3ss. 
Acid. carbol. } 
M. Fiat inj. 
Dose.—Lambs, 3j.; calves, 5j. to 5iij. 
