A catalogue of the genuine houshold furniture, Philosophical and Mathematical Instruments, Various Improvements in Mechanics, Implements in Arts and Trades, Plate, Watches, Books, Sundry Curiosities, and other Effects, of Henry Mill, Esq; Chief Engineer to the New River Company, deceased. Which will be Sold by Auction, By Samuel Paterson, At Essex House, in Essex Street, in the Strand, On Thursday, April the 18th, 1771, And the following Day, To begin each Day precisely at Twelve O'Clock. To be viewed on Tuesday, the 16th Instant, and to the Time of Sale.