192 JMiscellanies. 
coat of glue added, over which was laid a pattern of house papering, 
with rich figures. After the body of the carpet was thus prepared, 
a very thin touch of glue was carried over the face of the paper 
to prevent the India Rubber varnish from tarnishing the beautiful col- 
ors of the paper. After this was dried, one or two coats, (as may be 
desired,) of India Rubber varnish were applied, which, when dried 
formed a surface as smooth as polished glass, through which the va- 
riegated colors of the paper appeared with undiminished, if not with 
. Increased lustre. This carpet is quite durable, and is impenetrable 
to water, or grease of any description. When soiled, it may be wash- 
ed, like a smooth piece of marble, or wood. If gold or silver leaf 
forms the last coat, instead of papering, and the varnish is then appli- 
ed, nothing can exceed the splendid: richness of the carpet, which 
gives the floor the appearance of bemg burnished with gold, or silver. 
A neat carpet on this plan, will cost (when made of good papering,) 
about 374 cts.a yard. When covered with gold, or silver leaf, the 
cost will be about $1,00 or $1,50 cents a yard. { 
18. Stereotype Metalagraphic Printing.—I offer this name, as I 
have nothing better to designate it by. It means simply the transfer- 
ring of printed letters, from the pages of a book, or news paper to the 
polished surfaces of metallic plates, especially of soft iron. My ex- 
periments are not yet completed, yet I feel satisfied that the result is 
entirely a practicable one, if carefully conducted with proper instru- 
ments. 
The best plan on which to conduct the experiment is as follows :— 
Take two plates of very soft iron, of moderate dimensions, give one 
face of each a very true and fine polish, so that when applied by these 
faces, they shall uniformly fit and adhere together. Moisten two 
slips of printed news paper, or parts of a leaf from a book of the size of 
the plates, apply one to the polished face of each plate, and interpose 
between them a fold or two of silk paper, and then clamp the plates 
together. Give them a gentle heat over the fire, then place them in 
a vice, and apply a strong screw power. On separating them and 
gently removing the paper, the letters will be seen, distinctly formed 
on the faces of the two plates. Now as printer’s ink, is formed of 
lamp black and oil, upon which acid acts very little, the faces of the 
plates may be slightly touched over with diluted sulphuric or nitric 
acid, which if skilfully applied, acts on the iron and leaves the letters 
