43 



sc'vi'i-ul wMvs. By using washes of dilute earlidlic- acid, about one part carbolic 

 acid to tliirty parts of water, or nibbiug the affected parts over lightly with 

 l^eroseiie. by clippiii'4 tlie liair or l)y shaving the eggs off with a sharp knife 

 or razor. Onr own experience leads ns to prefer the last. With a very sharp 

 laiife or razor (a dull one will glide over the eggs) the affected parts can be 

 very (juickly run over, without removing much, if any. of the hair. This 

 method leaves no doubt as to whether or uot the eggs have lieen touched, as 

 in washes, and subsei|uent examinations are uot complicated b.v a lot of dead 

 eggs or shells. Perform once e\-ery two weeks, and there can be very few of 

 the larva^ which gain entrance to the stomach. Will it jiay. may naturally 

 l)e asked by the man who lias, sa.y, from tweut.y-five to a hundred colts in the 

 ]iasture. Possibly not, if liut a single season is con.sidered, liut the loss of a 

 single horse, or the jioor condition of a nimiber, resulting from bots. or the 

 fretting of the whole number in iiasturc, would more than equal all the cost 

 of removing the eggs from the entire lot. But when the iiresence on the farm 

 of the pest year after year is considered with all its attendant evils, we 

 believe most emphatirally that it will pa.v. 



Reiiicilics for Bots. 



The prescription of drugs for the removal of bots from the stomach, when 

 their presence is known or suspected. Iielongs rather to the veterinarian than 

 to the entomologist, but it may not be out of place here to call attention to a 

 few of them. It is, of i-ourse, uot an easy matter to determine during the life 

 of tlie horse whether any particular disturbance of the digestive or.gaus or 

 lark of nutrition is due to the presence of bots or to some other agency pro- 

 ducing similar symptoms, and even a competent veterinarian may be puzzled 

 in diagnosis. If occasional bots are noticed in the excrement of the animal, 

 together with poor condition, their presence in numbers may be inferred. It 

 must be remembered that the bots are capable of withstanding almost any 

 substance that the w.alls of the stomach can endure, and the safest plan, if 

 intending to dose for them, is to employ a veterinarian. Tur|ientine is perhaps 

 most generally given, but must be used with care. — Biillcliii .Yo. o, U. S. Dcitt. 

 of Afiririiltiire. Dirixion of Enlomologii. 

 BoT-FiY OF C.\TTLF. — Wakiu.k Fly. ( II ijiiodcniia liiirdtd.) Figs. 14 and lo. 



T'ntil a few years ago it was assumed that the common bot-fly affecting 

 cattle in this country was the same as the one most common in European 

 countries, and the same specific name was applied to it. with apiiarently little 

 careful examination of either larv:p or adults to determini' the (luestion with 

 certainty. There is so mudi in common, however, in tlie liabits and nature 

 of the injury of the two species that it seems ajipropriate to discuss some of 

 these general features for the two sjiecies, and then to give the distinctive 

 features for the two forms, with reference to such differences of habit or 

 treatment as may be necessary. 



A considerable portion of this general matter was prepared prior to the 

 discovery of the identity of our species with Vincata, and, while written with 

 horla in mind, applies properly to the former species. — Bulletin \o. J, ['. S. 

 I>('liiirtiiic)it of A(jriciiltiiiv. Dirisioii of Entowoloffii. 



