110 On the use of Peruvian Bark, 



lie good might arise from giving merely an abstract of 

 these important observations. 



For (observes Dr. Lafuente), it being absolutely ne- 

 cessary to convince the minds of the medical and other 

 attendants, in order to execute a plan, which, although 

 simple, requires a certain species of boldness to conquer 

 obstacles and prejudices, it will be indispensably neces- 

 sary to read the whole work, (which will be speedily 

 published), in order to be fully convinced of the correct- 

 ness, truth, and irresistible conviction it carries with it. 

 In the mean time, he informs the public that he has pre- 

 served himself from the Yellow- Fever, during, the exe- 

 cution of his public medical commission, in the years 

 1800, 1, 3, in which he was more or less exposed to 

 its contagious effects, by merely taking half an ounce of 

 bark every morning in one or two doses, and that having 

 begun their rounds more steadily, and been more exposed 

 to danger in the beginning of October, 1804, he guaran- 

 teed himself in the same manner during that month and 

 November. 



This was likewise practised by Dr. J. de Bobadilla, 

 and the Rev. Father Juan, of the order of San Mi- 

 guel Mendicant and Barefooted, and Chaplain to the sick 

 in the village of Barreos, who were constantly living 

 within its vortex, until tired of taking bark as a preser- 

 vative, and convinced that they should run but little risk, 

 in case they were attacked by the fever, they agreed to 

 discontinue it, and follow their rounds, determined, in 

 case of attack from the sickness, to destroy it by bark at 

 its first appearance, and sec if in this manner they could 



