3826 BOARD OF AGRICULTURE. 
To dispose of the lung parasites is a more difficult matter, 
not because the worm is less easily killed, but because the 
young worms and, above all, the ova encysted in the substance 
of the lungs cannot be reached. The worms living free in 
the windpipe and bronchia may be readily destroyed by caus- 
ing the affected animal to inhale sulphurous acid or chlorine 
gas. The agent first named is preferable as being less irrita- 
ting than chlorine, as exercising, indeed, when sufficiently 
diluted in air, a soothing and antiphlogistic action on the in- 
flamed bronchial mucous membrane. It is best administered 
by burning flowers of sulphur in a close house, but into which 
air can be readily and freely admitted in case of need, and in 
which both the patient and administrator are enclosed. It is 
commonly advised to throw sulphur on hot coals, but, as the 
latter give off carbonic acid and render the air unwholesome, I 
have adopted the plan of twisting up a small piece of soft 
paper into a cone, putting into this a pinch of sulphur and 
burning it, holding meanwhile by the twisted point of the cone. 
The sulphur fumes are to be evolved in this way until the air 
of the apartment is impregnated as strongly as the adminis- 
trator and his patient can bear without violent coughing. 
Breathing of the sulphur fumes should be kept up for half an 
hour or as long as the air of the building remains impregna- 
ted with it, and should be repeated at least three days in suc- 
cession. At the end of a week, should the patient survive, 
the smoking should be repeated to destroy the parasites which 
have been hatched in the interval. The same process may 
have to be repeated once more, though if the ova in the lungs 
are so numerous as to endanger life after this, the inflamma- 
tion caused by their presence will probably speedily cut. off 
the patient. 
Chlorine gas may be set free by mixing in a cup or saucer 
common salt, peroxide of manganese, and sulphuric acid. It 
is equally efficient with sulphur smoke, but much more irrita- 
ting and to be used with greater care. Indeed, this matter 
of smoking by either agent should only be trusted to the most 
careful and intelligent persons, otherwise serious accidents 
may ensue. | 
