4IO Journal of Agricultural Research voi. xii.no. 7 



In the writers' first experiment four lambs were treated. Two of 

 them weighing 21.09 9-°^ 21.77 kgm., respectively, were given 7.39 mils 

 of gasoline in 148 mils of milk at each dose, the equivalent of the dose 

 commonly recommended, and the others, weighing 26.3 and 22.2 kgm., 

 respectively, were given 14.8 mils of gasoline in 148 mils of milk at 

 each dose, the equivalent of Cofifey's doses of X» Ki ^^^ H ounce for 

 lambs. The dose named was given to the lambs on each of three suc- 

 cessive days. 



The two lambs which received 7.39 mils of gasoline passed about 

 one-fourth of the total number of stomach worms (Haemonchus contortus) 

 present, no hookworms {Bunostomum irigonocephalum) , of which only a 

 very few were present, and several nodular worms (Oesophagostomum 

 columbianum) , of which a considerable number were found post-mortem. 

 There was no evident effect on various other species of nematodes and 

 tapeworms present in one or both of the lambs. The two lambs which 

 received 14.8-mil doses of gasoline were more lightly infested; one which 

 passed 58 H. contortus showed none on post-mortem ; the other passed 4 

 and showed 2 post-mortem. There was very little effect on hookworms 

 present in small numbers in one of the lambs. 



All four of the lambs showed lesions of pneumonia which were sus- 

 pected to be of traumatic origin. 



In the second experiment three sheep were treated. The larger dose of 

 gasoline, recommended by Coffey and found most efficacious by the 

 writers, was employed and was given on each of three successive days 

 by a stomach tube passed down the esophagus, but not far enough to 

 direct the fluid into the rumen. In this way the writers expected to 

 avoid the possibility of causing traumatic pneumonia. None of the 

 sheep passed any stomach worms, and none were found post-mortem, 

 so the experiment throws no light on this subject. The treatment 

 showed a slight efficacy for hookworms {Bunostomum trigonocephalum) . 

 It failed to remove any nodular worms {Oesophagostomum columbianum) 

 from one sheep, but removed all specimens of this species from another 

 lightly infested sheep. It apparently removed all specimens of Cooperia 

 sp. from the only animal infested with this parasite. 



From this experiment it would appear that gasoline has some sUght 

 effect on intestinal worms in lightly-infested sheep, but the evidence is 

 not sufficient to justify its use for this purpose without further experi- 

 mentation. No lesions of pneumonia were observed in this experiment, 

 although the stomachs of all three sheep showed lesions suggesting healing 

 ulcers with traces of hemorrhage. 



As the question of the efficacy of gasoline as a vermifuge for stomach 

 worms in sheep and the likelihood of this treatment's causing lesions of 

 pneumonia and gastritis did not seem to be settled, a further trial of 

 gasoline was carried out by the junior writer. In this experiment two 



