:> 



\o l\Ir. Ci,A?.K'.f Obfcrvat'om: on the G^vus Ocjlnis. 



aware other reafons may be alfo affigneJ for it), that thofc horfcs 

 which are not expofed to the bots, more frequently are infefted 

 with the glanders, farcy, &c. as thofe of the army, poft-coachcs, 

 poll- waggons, and dray-horfcs, thci'e being rarely fpared, from the 

 nature 6f their work, to graze on the commons, and thus be ex- 

 pofed to receive them. 



If, after a more minute refearch into their effc6ls on the fyftem, 

 the utility of thefe native ftiinuli of animals fliould be eflablifhed, 

 and, like the leech, or the avUhariJcs, they fhould be called in to 

 the aid of veterinary medicine, it would not be impra£licable to 

 adminifter them artificially by means of their ova. 



If the flimulus is confidered as of too gentle a nature, it is in 

 fome meafure atoned for by its permanency, and the unlimited 

 power of increaQng their numbers ; at leaft, by the adminiftration 

 of them in this way, we might accurately afcertain their real 

 effects, and whether they are fo fatal as has been imagined. 



Lianoeus has alfo obferved of the pediculus, " rodendo caput 

 " exciat achores, apud puerulos voraces incarceratos, indeque ftru- 

 " mofos, ficque prxfervat a coryza, tufll, coscitate, epilepfia," &c. 



In the fame way the worms in children, I am induced to believe, 

 are wholefome to them in a certain quantity, by conftantly irri- 

 tating the membranes of the inteftines, and preventing the accefs 

 of worfe diforders. But however ufeful a few of thefe natural 

 jlhnuU of animals may be, the increafe of their numbers, by pro- 

 ducing bad confequences, ihould at all times be prevented. 



The Iheep are particularly fubje6l to diforders attended with ver- _ 

 ilgo, probably arifmg from an affedtion of the brain; and thslarvte of 

 the CE. Ovis are certainly very favourably fituated on the heigli'bou'r- 

 jng membranes of the maxillary fmufes, and may perhaps tend to 

 divert the attack of this diforder, or render it lefs fatal." 



Remarks 



