From John Breck Treat
Washington City Feby 5th 1810.
During a residence of the last five years at Arkansa, in Louisiana: I paid particular attention in making meteorological Observations—which being accomplished, I took the liberty to address them to you; and by Mail forwarded the Same from this City, in August last.
I wish Sir to know whether they have been receiv’d; and if So, whether you think they will in any way be Sufficiently useful as to induce the continuance of Similar remarks Should I as is most probable hereafter reside in a much more interior, and distant part of the Territory.
John B Treat.
RC (MHi); between dateline and salutation: “Thomas Jefferson Esquire”; endorsed by TJ as received 15 Feb. 1810 and so recorded in SJL.