196 



DISEASES OF 8HEKP. 



nose against the ground, or, carrying it low, dart? off at 

 a rapid pace, vainly endeavouring to escape from its 

 tormentor. During this period, a thin limpid fluid 

 distils from the nostrils, leading a careless observer to 

 confound the symptoms with those which accompany 

 Coryza. In general the irritation is now terminated, 

 as, while in the larvae state, the insects are incapable 

 of offensive measures. If they are clustered in con- 

 siderable numbers in the frontal sinuses, they will 

 doubtless lead to great suffering, parallel to what is 

 recorded to have followed the nestling of insects in 

 the same situation in the human being ; and it is, 

 therefore, advisable, when the cause of sturdy (para- 

 graph 169) is in any way doubtful, first to apply those 

 substances to the nostril, which are calculated to de- 

 stroy both these larvae and the pentastoma, should 

 they happen to be there. Tobacco smoke is the only 

 available remedy, and a very good one, being easily 

 brought in contact with the worms, and, when properly 

 administered, certain in its effects. One person secures 

 the sheep holding the head in a convenient position, 

 while another, having half filled a pipe with tobacco, 

 and kindled it in the usual manner, places one or two 

 folds of a handkerchief over the opening of the bowl, 

 then passes the tube a good way up the nostril, applies 

 his mouth to the covered bowl, and blows vigorously 

 through the napkin. When this has continued for a 

 few seconds, the pipe is withdrawn, and the operation 

 repeated on the other nostril. 



The round hair-worm {strongylus filarid) has been 

 found in great numbers in the trachea and bronchii of 

 calves by Camper, and of the sheep by Daiiboutou. 



