2i 



2. Copperas Water; 3. Ammonia Water; 4. Tar Water. The last three 

 proving ineffectual were not tried here, but the Carbolic Acid was report- 

 ed as being quite successful and so was repeated at this Station this 

 summer. 



Experiment I. Carbolic Acid. 



One part of Carbolic Acid to sixty-four parts of water. About three 

 table-spoonfuls were applied to each hole. 



Result. — One day later no ants could be found and the hills showed 

 no signs of fresh work. The following day, however, fresh dirt was pres- 

 ent around the holes, and the ants were seen at work. 



The grass near was killed by the solution. 



Experiment II. Carbolic Acid. 



One part of Carbolic Acid to thirty-nine parts of water. About three 

 table-spoonfuls were applied to each hole. 



Result. — This stronger solution seemed to have even less effect than 

 the solution tried in Experiment I. The grass was killed as in the other 

 case. 



Why these experiments, which were a success in Indiana, should fail 

 here I cannot say. The injury done to the grass, however, would render 

 this an undesirable remedy even if successful so far as removing the ants 

 is concerned. 



Experiment III. Kerosene. 



The kerosene was poured on in sufficient quantity to moisten the en- 

 tire hill. 



Result. — The nests were deserted and the ants either destroyed or 

 driven away. 



The grass around was killed, however, which makes this an undesira- 

 ble remedy also. 



Bisulphide of Carbon. 



This disagreeably smelling chemical may be obtained of any druggist 

 at about fifty cents a pound. The bottle in which it is contained should 

 be kept tightly stoppered, as it loses its strength if exposed long to the 

 air. When used, care should be taken to avoid breathing the fumes, not 

 only because these are disagreeable but also because when breathed for 

 some time the health is affected. It should also be kept away from fire 

 as it burns at loy*^ Far. 



Experiment IV. Bisulphide of Carbon. 



Eight or ten drops poured on the top of the hill. 



Result. — The ants seemed greatly disturbed, but after a time returned 

 to their work and were apparently unaffected. 

 The grass around was not killed. 



