134 DISEASES OF DOMESTICATED BIRDS 
isfactory method of combating it is through preventive measures 
against its spread. Birds showing symptoms should be isolated im- 
mediately, the houses thoroughly cleaned, and the floors, dropping 
boards and roosts soaked with carbolic acid in 5 per cent solution, 
or crude carbolic acid, or compound cresol, in 2 per cent solution. 
Other disinfectants, especially the coal tar products, may be substi- 
tuted, provided sufficiently strong solutions are applied. The dis- 
infectant may be spread by means of a spray pump or brush, but it 
is important that the places exposed to droppings should be covered 
by the fluid. During the course of an outbreak the droppings are 
to be removed frequently as it is through these that the infection 
is passed to healthy birds while feeding in contaminated pens. Runs 
to which diseased fowls have had access are highly dangerous to the 
non-infected and should be abandoned for a year at least if possible. 
These may be plowed and seeded, or if their use as runs is impera- 
tive the soil may be limed and plowed under. Since earth worms are 
credited with serving as hosts of the coccidium, stringent measures are 
necessary on badly infected premises, to accomplish complete eradi- 
cation of the disease. Covering the ground with chloride of lime or 
unslacked lime at intervals may prove sufficient, especially where 
preventive measures have been adopted early and a minimum ex- 
posure to infested droppings is indicated. Fowls received from out- 
side sources, unless known to be unexposed, should be quarantined 
for a period of three to four weeks before being placed in the flock. 
REFERENCES 
1. Fantham. Experimental studies in avian coccidiosis. Proc. Zool. 
Soc. London, Vol. 8, 1910, p. 708. 
- 2, Fantham. Coccidiosis in British game birds and poultry. J. Econ. 
Biol., Vol. 6, 1911, p. 75. 
3. Jowett. Coccidiosis of the fowl and calf. J. Comp. Path. and 
Therap., Vol. 24, 1911, p. 207. 
4, Meyer and Crocker. Some experiments on medical treatment of. 
coccidiosis in chickens. Am. Vet. Rev., Vol. 48, 1913, p. 497. 
