Remarks & Occurs. in March 
20th. Began to Manufacture my Wheat with the Water of Piney Branch, which being insufficient to keep the Mill constantly at Work, & Country Custom coming in no great progress coud be made.
country custom: Farmers from the local countryside were bringing their grain to GW’s mill to be ground in exchange for a one-eighth toll (HENING description begins William Waller Hening, ed. The Statutes at Large; Being a Collection of All the Laws of Virginia, from the First Session of the Legislature, in the Year 1619. 13 vols. 1819–23. Reprint. Charlottesville, Va., 1969. description ends , 6:58).