437 
the Swedish Stone Pajier. 
paper was then spread over it, and a second board was 
placed above all. The w hole being then inverted, the 
board with the rim w r as taken off, and then the first sheet 
of paper. The compressed mass w as then laid over 
upon another board sprinkled with sand, and left to dry, 
after taking the sheet of paper from its other side. Squares 
made in this manner dry without cracking; but as they 
become warped, it is necessary afterwards to fiatten them, 
by putting them, with boards betw een, under a screw- 
press, and letting them stand for some time. 
Experiment I. I mixed an ounce and a half of the 
dry pulp from the mill with two ounces of common glue, 
and, having added red bole and ochre, of each two ounces, 
obtained a smooth plate. 
II. To two ounces of pulp I added four ounces of red 
bole pulverized, and half an ounce of chalk, with an 
ounce and a half of glue. The plate thus produced was 
full of wrinkles and chinks, but tolerably hard. 
III. An ounce and a half of pulp, w ith four ounces of 
bole, and two of sulphat of iron, produced a plate equally 
hard, but uneven. 
IV. An ounce of pulp procured from old paper and 
bookbinders’ shavings mixed, with half an ounce of glue, 
an ounce of powdered chalk, two of bole, and an 
ounce of linseed oil, produced two thin plates smooth and 
hard. 
V. Two ounces of pulp from the mill, with half an 
ounce of glue, six ounces of red bole and two of chalk, 
to which were added two ounces of sulphat of iron, and 
the same quantity of linseed oil, afforded plates that were 
smooth, but not strong. 
VI. An ounce and a half of pulp, with an ounce of 
glue, and four ounces of white bole, produced a plate 
smooth, beautiful, and hard. 
Vol. II. R 
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