We duly acknowledge the receipt of Your respected Letter of the 6th., inclosing a Check on the Office of Discount &c in this City for $181.90. the amount of the Books sent You.—   Our having been in some little degree serviceable to You deserves not the least acknowledgment, as it was a gratification to us, in asmuch as we are, truly,

with the highest veneration, Sir, Your most obedient & most humble Servants