Rip the dress entirely apart. Take large raw potatoes, and allow a pint of cold water to each potatoe. Having pared the potatoes, grate them into the basin of water. Cover it; and let it stand three hours, or more. Then pour it carefully off, into a broad pan; leaving the sediment or coarse part of the grated potatoes at the bottom of the basin. Having spread a clean linen cloth on a large ironing table, and put some irons down to the fire, lay the silk (a breadth at a time) upon the cloth, and with a clean sponge dipped in the potatoe-water, go all over it, on the wrong side, Then hang that breadth out upon a line; stretch it evenly, and leave it to dry. Take another breadth; sponge it with the potatoe-water; hang it out; and proceed in the same manner till all the silk is done. By the time the whole has been sponged and hung out, the first breadths will in all probability be dry enough to iron. It must be ironed on the wrong side.
The sleeves must be taken out and ripped open, before sponging them. Each piece of the body must, of course, be done separately.