Dating drey canning jars
(This was during the Napoleonic War era and was done, not surprisingly, for military reasons.) Appert's experiments with the application of high heat along with the exclusion of air from a sealed container led directly to the development of a canning process in 1809 (and Appert's award of the prize money) that allowed for the relatively long term storage of animal and vegetable products in sealed containers of various materials (Munsey 1970; Roller 1983; Bender 1986; Jones 1993).
As with most of the other major bottle type categories covered on this website, the examples described and illustrated on this Food Bottles & Canning Jars typology page comprise a brief overview and sampling of the variety of food bottles produced during the era covered by this website - the 19th century through the middle of the 20th century.
The one significant exception to this statement would be the fruit/canning jar category which has generated significant interest (and references) from collectors (Munsey 1970).