HEEL-FLY. 227 
least upon animals that are kept upon the farms. Of course 
cattle that have to take care of themselves all through the 
seasons, or in other words that are neglected, will not be 
benefited by any remedies and have to suffer unless we rub a 
mixture of pine-tar (1 gallon), kerosene, fish oil, or crude 
carbolic acid (1 quart), and powdered sulphur (2 pounds), 
over their sides, fore-legs, belly and roots of tail, which will 
protect them to some extent. This should be done at the 
time when they shed their old coats. Those animals that 
are kept upon the farm should be examined every day, and 
\ 
igh ‘ \ 

Fig. 184.—Larva of emasculating fly in striped gopher. Natural 
size. Original. 
if any eggs are discovered they should be moistened with 
pure kerosene, which will kill the enclosed embryo. If such 
precautions have not been taken, and the tumors caused by 
the larvee appear during January and February, they should 
be lanced, and the maggots should be removed by squeez- 
ing. By rubbing the wounds with a little carbolated vase- 
line they soon heal and disappear. 
There is another genus of bot-flies, Cuterebra, that con- 
tains a number of very interesting flies, and as not infre- 
quently letters are received asking for information in regard 
