50S \PPENDIX. I. 



" of sores cures them, which is, I suppose, 

 " chiefly by keeping them clean. If there is 

 " any credit to be given to history, poisons 

 " have been sucked out, 



Pallentia Vulnera lamhit 



Ore Venena trahens. 



" are the words of Lucan on the occasion : if 

 " the people to whom these words are applied, 

 " did their cure by immediately following the 

 " injection of the poison, the local confinement 

 " of another poison brings the case to a great 

 " degree of similarity. 



" I hope I have not tv*ed your lordship with 

 " my long tale ; as it is a true one, and in my 

 " apprehension a curious piece of natural his- 

 " tory, I could not forbear communicating it 

 " to you. I own I thought the story in the 

 " papers to be an invention, and when I consi- 

 " dered the instinctive principle in all animals 

 " of self-preservation, I was confirmed in my 

 u disbelief; but what I have related I saw, 

 " and all theory must yield to fact. It is only 

 " the Rubeta, the land toad, which has the 

 " property of sucking ; I cannot find any the 

 " lest mention of the property in any one of the 

 " old naturalists. My patient can bear to have 

 " but one applied in twenty-four hours : the 



