Pottery and of Vitrification. 135 
Sévres, March 8th, 1836 
. Royal Manufactory of Porcelain, and for painting on Glass. 
UNITED STATES OF AMERICA. 
Instructions as to the manner of co-operating towards the comple- 
tion of the collection relative. to the arts, connected with the manu- 
facture of porcelain and with vitrification, founded. at the Royal 
Manufactory at Sevres near Paris. 
I. What kinds of pottery are used by the different classes of in- 
habitants of the country; the agriculturists, the mechanics, citizens 
and merchants, poor and rich ? 
Is the pottery of native or foreign manufacture ? 
If foreign, from what country does it come, and in what way? 
If of native manufacture, where is it made? 
II. As to the native pottery, (and under this name we include all 
varieties, from the most common to porcelain,) it is desired to col- 
lect and procure specimens of every sort. Common pottery, both 
with and without glazing. Delftware common and Delftware fine. 
Pottery of brown free stone; crucibles. Varieties of porcelain. 
Bricks, both common and those manufactured by particular processes. 
Plate species.—Plates, oval dishes. 
Hollow ware.—Cups, salad dishes, tea and coffee cups 
Round pots, hollow moulded.—Oval and square pieces, saucers, 
boxes, &c. 
The largest piece of jist sort that is made. 
The name given in the country to each piece. 
The price of each piece upon the s 
Whether there is exportation, and to what place. 
Ill. Fasrication. 
1. Primary materials—for the mass or paste. Clays. Marls 
or plastic earths ae may be substituted for them. Sands. Rocks 
or stones. Limesto: 
For the glaze or sinc —If stony materials—feldspar-stones. 
If metallic matters—Metals, their oxides, and metallic glass. 
Exact localities from which these materials are drawn. 
2. Modelling.—Moulds of plaster, of terra cotta or other materi- 
als of whatever kind. 
The lathe and other instruments for fabrication. 
Sketches, with exact dimensions of these instruments, if it is sup- 
posed that they differ from those used in Europe. 
3. Baking.—Form of the ovens sketched, with the dimensions. 
