Personal Narrative Of Travels To The Equinoctial Regions Of America During The Years 1799-1804 - Volume 3 - By Alexander Von Humboldt And Aime Bonpland.
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It
is probable that Brazilian gold, paying the quint, has not, during the
last forty years, risen to 5500 kilogrammes.
I heretofore shared this
error in common with writers on political economy, in admitting that
the quint in 1810 was still (instead of 26 arrobas or 379 kilogrammes)
51,200 Portuguese ounces, or 1433 kilogrammes; which supposed a
product of 7165 kilogrammes. The very correct information afforded by
two Portuguese manuscripts on the gold-washings of Minas Geraes, Minas
Novas and Goyaz, in the Bullion Report for the House of Commons, 1810,
acc. page 29, goes as far only as 1794, when the quinto do ouro of
Brazil was 53 arrobas, which indicates a produce of more than 3900
kilogrammes paying the quint. In Mr. Tooke's important work, On High
and Low Prices part 2 page 2) this produce is still estimated (mean
year 1810 to 1821) at 1,736,000 piastres; while, according to official
documents in my possession, the average of the quint of those ten
years amounted only to 15 arrobas, or a product quint of 1095
kilogrammes, or 755,000 piastres. Mr. John Allen reminded the
Committee of the Bullion Report, in his Critical Notes on the table of
M. Brongniart, that the decrease of the produce of the gold-washings
of Brazil had been extremely rapid since 1794; and the notions given
by M. Auguste de Saint Hilaire indicate the same desertion of the
gold-mines of Brazil. Those who were miners have become cultivators.
The value of an arroba of gold is 15,000 Brazilian cruzados (each
cruzado being 50 sous). According to M. Franzini the Portuguese onca
is equal to 0.028 of a kilogramme, and 8 oncas make 1 mark; 2 marks
make 1 arratel, and 32 arratels 1 arroba.) If, in commercial value,
gold in grains prevails, in the republic of Columbia, over the value
of other metals, the latter are not on that account less worthy to fix
the attention of government and of individuals.
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