Vaccination. 279 
procure in the various occasions when they brought out por+ 
tions of matter in the ships of their East India company, 
which Jost their efficacy on the passage, and arrived inert. 
After having propagated the vaccine at Canton as faras was 
.possible and the political circumstances of the empire would 
permit, and having confided the further dissemination of it 
to the physicians of the English factory at the above-men- 
tioned port, Balmis returned te Macao, and embarked in a 
Portuguese vessel for Lisbon, where he arrived on the 15th 
of August. In the way he stopped at St. Helena, in which, 
as in other places, by dint of exhortation and perseverance, 
he prevailed upon the English to adept the astonishing anti- 
dote, which they had undervalued for the space of more than 
eight vears, though it was a discovery of their nation, and 
though it was sent to them by Jenner himself. 
Of that branch of the expedition which was destined for 
Peru, it is ascertained that it was shipwrecked in one of the 
mouths of. the River de la Magdalena; but having derived 
immediate succour from the natives, from the magistrates ad- 
jacent, and from the governor of Carthagena, the subdirector, 
the three members of the faculty who accompanied him, and 
the children, were saved, with the fluid in good preserva- 
tion, which they extended in that port and its province 
with activity and success. Thence it was carried to the 
isthmus of Panama, and persons properly provided with all 
necessaries undertook the long and painful navigation of 
the River de la Magdalena; separating, when they reached 
the interior, to discharge their commission in the towns of 
Teneriffe, Mompox, Ocana, Socorro, San Gil y Medellin; 
in the valley of Cucuta, and in the cities of Pamplona, Gi- 
ron, Tupja, Velez, and other places in the neighbourhood, 
until they met at Santa Fé; leaving every where suitable 
'  iistructions for the members of the faculty, and, in the 
more considerable towns, regulations conformable to those 
rules which the director had prescribed for the preservation 
of the virus, which the viceroy afhrms to have been com- 
municated to jifly thousand persons without one unfavoure 
able result. Towards the close of March 1805, they pre- 
pared to continue their journey in separate tracks, for the 
S54 purpose 
———=u— re 
a. 
