280 Facciniation. 7 
purpose of extending themselves with greater facility and 
promptitude over the remaining districts of the viceroyalty, 
situated in the road of Popayan, Cuenca, and Quito, as far 
as Lima. In the August following they reached Guayaquil. 
The result of this expedition has been, not merely to spread 
the vaccine among all people, whether friends or enemies, 
among Moors, among Visayans, and among Chinese, but 
also to secure to posterity, in the dominions of his majesty, 
the perpetuity of so great a benefit, partly by means of the 
central committees that have been established, as well as by 
the discovery which Balmis made of an indigenous matter 
in the cows of the valley of Atlixco, near the city of Puebla 
de los Angeles, in the neighbourhood of that of Valladolid 
. Mechoacan, where the adjutant Antonio Gutierrez found 
it, and in the district of Calabozo, in the province of Ca- 
racas, where don Carlos de Pozo, physician of the residence, 
found it. 
A multitude of obastiediidls, which will he published 
without delay, respecting the development of the vaccine 
in various climes, and respecting its efficacy, not merely in 
preventing the natural small-pox, but in curing simulta- 
neously other morbid affections of the human frame, will 
manifest how important to humanity will prove the conse- 
quences of an expedition which has no parallel in history. 
Though the object of this undertaking was limited to the 
communication of the vaccine in every quarter, to the in- 
struction of professors, and to the establishment of regula- 
tions which might serve to render it perpetual ; nevertheless 
the director has omitted no means of rendering his services 
beneficial, at the same time, to agriculture and the sciences. 
He brings with him a considerable collection of exotic plants. 
He has caused to be drawn the most valuable subjects in 
natural history. He has amassed much important informa- 
tion; and among other claims to the gratitude of his coun- 
try, not the least consists in having imported a valuable as- 
semblage of trees and vegetables in a state to admit of propa- 
gation, and which, Being cultivated in those parts of the pe- 
ninsula that are most congenial to their growth, will render 
this expedition as memorable in the annals of agriculture as 
in 
