158 PRACTICE OF PHYSIC. 



fit matter to be employed in inoculation, by taking it from a 

 person of a sound constitution, and free from any disease or 

 suspicion of it ; by taking it from a person -who has had the 

 smallpox of the most benign kind; and, lastly, by taking the 

 matter from such persons, as soon as it has appeared in the 

 pustules, either in the part inoculated, or on other parts of the 

 body. 



8. The introducing, by inoculation, but a small portion of 

 the contagious matter. 



9. After inoculation, the continuing the vegetable diet, as 

 well as the employment of mercurial and antimonial medicines ; 

 and, at the same time, frequently employing purgatives. 



10. Both before and after inoculation, taking care to avoid 

 external heat, either from the sun, artificial fires, warm cham- 

 bers, much clothing, or being much in bed ; and, on the con- 

 trary, exposing the person to a free and cool air. 



11. Upon the appearance of the eruptive fever, the rendering 

 that moderate by the employment of purgatives, by the use of 

 cooling and antiseptic acids, and, especially, by exposing the 

 person frequently to a cool and even a cold air, at the same 

 time giving freely of cold drink. 



12. After the eruption, the continuing the application of cold 

 air, and the use of purgatives during the course of the disease, 

 till the pustules are fully ripened. 



DCIV. These are the measures proposed and practised in 

 the latest and most improved state of inoculation ; and the ad- 

 vantages obtained by the whole of the practice, or at least by 

 most of the measures above mentioned, are now ascertained by 

 a long experience to amount to this, That in ninety-nine cases 

 of the hundred, inoculation gives a distinct smallpox only, and 

 that also very generally of the mildest form : but it will be still 

 useful, for the proper conduct of inoculation, to consider the 

 importance and utility of the several measures above mentioned, 

 that we may thereby more exactly determine upon what the 

 advantages of inoculation more certainly depend. 



DCV. As the common infection may often seize persons 

 labouring under another disease, which may render the small- 

 pox more violent, it is obvious that inoculation must have a 

 great advantage, by avoiding such concurrence. But, as the 



