1From Thomas Jefferson to Thomas Mann Randolph, 11 October 1808 (Jefferson Papers)
...I shall be glad to hear how it answers on experiment. I have recieved the French Dynamometer. it is a light & beautiful contrivance, depending on a spring, & a good deal in the way of the powder eprouvette which I shewed you.
2Thomas Jefferson to Eleuthère I. du Pont de Nemours, 24 April 1811 (Jefferson Papers)
We are, four of us, sportsmen, in my family, amusing ourselves much with our guns. but the powder sold here is wretched, carrying the index of the French eprouvette (such as you furnished An eprouvette is an instrument that tests the strength of gunpowder (
3Eleuthère I. du Pont de Nemours to Thomas Jefferson, 17 May 1811 (Jefferson Papers)
Powder and the remainder of musket to blow rocks, this last although of the same quality and made out of the same materials does not give as good a report on a small eprouvette on
4To James Madison from Charles W. Goldsborough, 21 January 1813 (Madison Papers)
...would seek a court-martial of Catalano on the grounds that he could not have witnessed all the tests made of Ewell’s gunpowder. (2) He stated that Lieutenant Neal, who had loaded the eprouvette, had showed “great resentment” at Goldsborough’s allegation that he had practiced deception in the test of the gunpowder. Ewell also published a certificate from John T. Frost to the effect that Frost...
5Thomas Jefferson to Patrick Gibson, 20 May 1813 (Jefferson Papers)
I have the eprouvette used in our war department for proving powder.
, and note. An eprouvette is an instrument used to test the strength of gunpowder (
6To James Madison from Thomas Ewell, 23 May 1813 (Madison Papers)
A glance of your Eye, will detect, one too bad—to be imposed on any who have minds. Captn. morris from a series of experiments established that 85 yds. in the Brass Eprouvette—was equal to over 200 in the Iron. Lt. Miller of the Marine corps—disgraced by expulsion from the mess of the officers—reports that my powder threw the Ball 100 yds. in the Brass Eprouvette—and only 74 yds. in the Iron!!!
7Thomas Jefferson to Patrick Gibson, 12 June 1813 (Jefferson Papers)
it’s force
by the eprouvette is 16.
8To James Madison from Thomas Ewell, 27 July 1813 (Abstract) (Madison Papers)
...would have been accepted if at all possible because it was badly needed. Stoddert’s rejoinder of 12 May asserted that Morris’s report was invalidated by Catalano having been allowed to load the eprouvette, and asked that Ewell’s powder be tried again, “without suffering Catilano to have any kind of agency” in the proceedings. On 22 May, Jones replied that Catalano had had no......eprouvette...