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 v^e 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 



Fig. 184. — Larva of emasculating fly in striped gopher. Natural 

 size. Original. 



if any eggs are discovered the^^ should be moistened with 

 pure kerosene, w^hich will kill the enclosed embryo. If such 

 precautions have not been taken, and the tumors caused bj^ 

 the larvge 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 



