"'A Brief Examination of Lord Sheffield's Observations on the Commerce of the United States,' by Matthew Carey, was printed in successive numbers of the _American Museum_, in 1791, and was collected in a volume, printed the same year at Philadelphia, with a supplementary note on 'The Present State of American Manufactures,' etc. On pages 126 and 127 he has the following observations: 'Manufactures of glass, of earthen-ware, and of stone, mixed with clay, are all in an infant state. From the quantity and variety of the materials which must have been deposited by Nature in so extensive a region as the United States, from the abundance of fuel which they contain, from the expense of importation, and loss by fracture, which falls on glass and earthen wares, from the simplicity of many of these manufactures, and from the great consumption of them, impressions of surprise at this state of them, and a firm persuasion that they will receive the early attention of foreign or American capitalists, are at one produced. Coarse tiles, and bricks of an excellent quality, potter's wares, all in quantities beyond the home consumption, a few ordinary vessels and utensils of stone mixed with clay, some mustard and snuff bottles, a few flasks or flagons, a small quantity of sheet-glass and of vessels for family use, generally of the inferior kinds, are all that are now made.' "Hamilton's return of exports of the United States from August, 1789, to September, 1790, printed in the appendix to Carey's book, gives, for earthen and glass ware, nineteen hundred and ninety dollars. "In Miss Caulkins's 'History of Norwich,' Chapter XLIX., it is stated that in 1796 'a pottery for the manufacture of stone-ware was established at Bean Hill, which continued in operation far into the present century, seldom, however, employing more than four or five hands.' In Morse's 'Gazetteer,' 1797, we read, under Norwich, that the inhabitants manufacture 'stone and earthen ware.' In the _Norwich_ (Connecticut) _Gazette_, September 15, 1796, we find this advertisement of a pottery, which appears to have been in operation by a Mr. Lathrop prior to 1796, and is, without doubt, the one referred to by Miss Caulkins and Dr. Morse: "'C. POTTS & SON, informs the Public, that they have lately established a Manufactory of EARTHEN WARE at the shop formerly improved by Mr. Charles Lathrop, where all kinds of said Ware is made and sold, either in large or small quantities, and warranted good.'