15. Went a huntg. again with Mr. Fairfax & found a fox at the head of the blind Pocoson which we suppose was killd in an hour but coud not find it. Mr. Peake dind here & Mr. R. Alexr. came after.
The mouth of the blind pocosin was on the Potomac shore below the mansion house, at the southwest corner of the Mount Vernon tract (survey by GW for John Posey, 10 Oct. 1769, ViMtvL).