New Mode of Printing Designs, &c. 191 
rate of five miles per hour. The saving of the expense of 
horses and track-roads promises to make this application of 
human power very valuable. 
15. New mode of Printing Designs.—A discovery has 
been made in the department of Calvados in France, by 
which the finest strokes of the crayon or pencil, upon por- 
celain, may be infinitely multiplied. These strokes, traced 
with a particular metallic composition upon the polished 
surface of porcelain, are incrusted by the second applica- 
tion of fire, without the slightest injury. ‘The parts thus de- 
lineated acquire a sort of roughness, insensible to the touch, 
and only to be discovered by its perfect retention of ink, 
which is easily wiped off the other parts of the surface. 
This method seems to have decided advantages over litho- 
graphy. 
then 
The following are some of the various proportions recom- 
mend 
2 parts paper pulp, 1 glue, 1 chalk, 2 bole earth, 1 lin- 
Seed oil ; thin forme 7 thin, hard, and very smooth sheet. 
‘ 
