as affecting Domesticated Animals. 65 



the liorns of his cattle — some fifteen or sixteen in numlK-r. On 

 the following day the greater part of them were found to be 

 seriously ill, and the assistance of Mr. Bowles was sought. On 

 investigating the case, !Mr. Bowles found that the animals were 

 poisoned with the mercurial ointment, ivhich they had cleanly 

 liched from off each other s liorns. Notwithstanding all the care 

 which was given to the cases, nearly one-half of them proved 

 fatal, and the rest of the animals were saved with very great 

 difficulty. 



Having said sufficient, we trust, by way of caution in the use 

 of these poisonous compounds, we shall conclude our remarks by 

 stating that the same remedies which have been recommended 

 for the destruction of lice on the horse are equally efficacious 

 when applied to the ox. They should be used in the same 

 manner, and at the same intervals of time. For cattle, how- 

 ever, which have to be dressed all over, the oleaginous com- 

 pound, mentioned at p. 62, is often to be preferred to any other. 



Lice of the Calf. 



As an addendum to the preceding remarks on the lice of the 

 ox, we may state that Denny has described a variety of the 

 Hamatopinus as existing on the calf, which differs in several 

 respects, but particularly in the length of its abdomen and the 

 thickness of its limbs from the louse of the older animal. He 

 says " that the only two examples of this species which I have 

 examined were kindly forwarded to me by Rev. L. Jenyns, who 

 found them upon a calf. Mr. Jenyns named them vituli, and I 

 have no doubt they are the species so named by Linnaeus and 

 Fabricius. It may appear somewhat strange that a young animal 

 should have a distinct species of parasite, which is not found 

 upon its parents ; but as far as I am able to judge, such is the 

 fact."* 



In the course of our investigations we have often sought for 

 this louse, but hitherto without success. We have also had 

 numerous specimens of lice obtained from calves sent us from 

 different parts of the country, and these have always proved to 

 be of the kind common to the older animals. 



Louse of the Sheep. 



We insert this heading in this place for the sake of complete-- 

 ness, as we have in another pait of this essay fully described the 

 kind of louse met with on the sheep. The Ilccniafopinus, as .has 

 been stated, is unknown as being parasitic to this animal, while 

 the Tricltodectes is also rare, excepting in particular localities. 



* ' Monograpliia Anoplurorum Britannia',' p. 32. 

 VOL. I. — S. S. F 



