ORSF.llVATIONS ON QUARANTINK. 47 



mon justice, the person who sends healthy sheep, and 

 who, but for this reguhition, would ha\e had them 

 turned into money long before the time they are allowed 

 to be sent into the market, cannot be called on for the 

 payment of any portion of the sum thus expended. 

 Let us also bear in mind, that animals exported from 

 one climate to another are found for a time to lose 

 condition, and thus their value may be lessened. While 

 in quarantine they must be frequently, nay, daily, ex- 

 amined ; this, therefore, will necessarily be attended 

 with considerable trouble and expense ; and if any 

 diseased ones are found, all the sheep with which they 

 were placed must either be kept an indefimte lime or 

 be slaughtered forthwith, and considerable loss will be 

 thereby incurred : the pens, sheds, or places must also 

 be purified by disinfectants before any fresh sheep can 

 be allowed with safety to inhabit them. 



These and many other practical difficulties must 

 prevent the adoption of quarantine, which, indeed, to 

 our mind, gives the idea that these selected spots will 

 rarely be free from the disease. Here, therefore, would 

 be a centre from which the sheep-pox might diverge 

 W'henever those mysterious but certain causes are 

 combined which would produce its extension as an 

 epizootic. 



Hurtrel d'Arboval, in his Dictionnaire de MMec'ine 

 Vet^rifiaire, states that the clavelee is both epizootic, 

 enzootic, and contagious; and that, in the year 1816, 

 considerable numbers of sheep were destroyed by it, 

 particularly in the environs of Paris*. The fact of 

 that locality being rarely free from the pest has been 

 alluded to, and an explanation of it is afforded by the 



* Articles Clavelee, Clavelisation. 



