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Barrow, John [Editor]
Dictionarium Polygraphicum: Or, The Whole Body of Arts Regularly Digested: Illustrated with Fifty-six Copper-Plates. In Two Volumes (Band 2) — London, 1758

DOI Page / Citation link:
https://doi.org/10.11588/diglit.19575#0253
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f3a H O U

For yellow Rofes lay on mafticote, and fhade with gamboge,
gall-{lone, and biftre, heightening the lights with mafticote and
white.

The {talks, the leaves, and the buds of all forts of Rofes, muft
be laid in with verditer, mixed with a little mafticote and gam-
boge, and to {hade them ufe iris-green, with lefs of the other co-
lours when the fhades are deep ; the wrong fide of the leaves
muft be bluer than the other, therefore you muft lay on fea-green
and mix it with iris-green to {hade with, making the veins or
ribs of that lide lighter than the ground, and thole of the right
fide deeper.

The prickles upon the ftalks, and the buds of the Rofes, are
made with flight touches of carmine in all directions, and thofe
on the ftem of the tree ; and larger branches are ftruck in with
verditer and carmine, and {haded with carmine and biftre, mak-
ing alfo the bottom of the ftems and ftalks more reddifh than the
tops ; that is, you muft mix green with carmine and biftre to
{bade with.

The Pafs-RosE ; this is to be done the fame way as the
French marigold, and the green of the leaves the fame; but the
veins muft be of a deeper green.

ROSIN, is a refinous matter, prepared from the juice of the
pine-tree, ordinarily ufed for making wax, &c.

We have, in the Philofophical TranfacYions, the method of
preparing this drug in the fouthern parts of France.

Firft, they pare off the bark of the pine, to make the fap run
down into a hole made at bottom to receive it; as the juice runs,
it leaves a cream or cruft a-top ; which, being tempered with wa-
ter, is fold fraudulently for white bees-wax.

When they have got a quantity of the juice, they {train it
through a bafket, and what runs through it is the common tur-
pentine.

■ What flays behind they mix with water, and, diftilling it in
an alembic, the matter that rifes is the oil of turpentine, and
the cake that remains is the common Rofin.

ROSSO of Florence, born in the year 1496, ftudied with
Michael Angelo, lived at Florence, Rome, and France, excel-
led in hiftory and architecture; died in the year 1541, aged forty-
five vears.

TV /l^ Martin ROTA Saiinlenfe fometimes marked with
x\r jLV, thefe words, Sabenzanus fecit.

Hans ROTTENHAMMER, bom in the year 1564, ftudied
under Donawer and Tintorct, lived at Venice and Bavaria, ex-
celled in hiftory; died 1604, aged forty years.

Ja?nas ROUSSEAU, was a French landfcape-painter, born at
Paris> he had a great part of his inftrucfion from Herman van

Swanevtlt,
 
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