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Article is self-inconsistent with respect to dates

At the top of the article, we see the text:

In 1795 the French military offered a cash prize of 12,000 francs for a new method to preserve food. Nicolas Appert suggested canning, and the process was first proven in 1806 in tests conducted by the French navy.

But then in the "History and development of canning" section, we see the text:

In 1809, Nicolas Appert, a French confectioner and brewer, observed that food cooked inside a jar did not spoil unless the seals leaked, and developed a method of sealing food in glass jars.

How is it that the French navy was testing Appert's process in 1806, three years before the article simultaneously claims Appert made the observations that led to the invention of the process?

(I.e., I suspect at least one of these dates needs to be fixed; that, or two of the cited sources are in conflict.)

Pnkfelix (talk) 16:05, 10 May 2015 (UTC)


In addition... the article says:

Canned food also began to spread beyond Europe — Robert Ayars established the first American canning factory in New York City in 1812, using improved tin-plated wrought-iron cans for preserving oysters, meats, fruits and vegetables.


Apart from the fact the Franco-British inventors of the tin can were, as per above, already using tin-plated wrought-iron cans, it would be nice to include how he 'improved' these within a few months. For the article says de Girard utilized 'British merchant Peter Durand' [ French according to the wiki on Appert ] to patent his tin idea, whereupon Bryan Donkin and John Hall bought the patent in 1811 and began a factory --- which would take them to 1812 to have production, as instance in the Appert article where it says they started in 1812.
With many such inventions I have been astounded by how quickly early America apparently copied British and European invention --- bearing in mind the minimum six weeks of oceanic travel, which would include communications before the Cable --- notably with the birth of the railways, where Stephenson opened the Stockton and Darlington in 1825 and a year later the Mohawk and Hudson began --- but it seems difficult to imagine Mr. Ayars being aware of the obscure canning invention started in 1812 and having his own factory across the Atlantic 'improved' within the same year.
The Appert article says:

Just a decade later, the Appert method of canning had made its way to America.

from the 1812 Donkin-Hall date which would put it sometime in the 1820s. Claverhouse (talk) 14:47, 11 December 2017 (UTC)
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