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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#0008
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1 JAP

To-make it, take one ounce of cryftal in powder, three ounce!
of minium, one ounce of arfenic, prepared as for the topaz, and
one ounce of vitriol calcined ad rubedinem, the whole reduced
to a fine powder in a brafs mortar, proceeding moreover as in
the preceding.

JADE, a greenifh ftone, bordering on the colour of olive,
much efteemed for its hardnefs, which exceeds that of porphyry,
agate, and j.afpery and is only to be cut wkh the powder of dia-
monds.

It is mightily efteemed by the Turks and Poles, who all adorn
their fine works with it, and efpecially the handles of their fabres.

Mr. Bernier tells us, that the caravans of Thibet carry it to
Cachemire, and that the Galibis prize it as highly as a dia-
mond.

JANUARY, is reprefented, in painting, &c. all in white,
like fnow or hoar froft, blowing his fingers; under his left arm
a billet, and Aquarius ftanding by his fide.

JANUS, is reprefented, in painting, &c. with two faces ;
holdrn'g ih one hand a long rod or wand ; and in the other
a key.

The two faces of Janus fignify time ; the one, being withered
and hoary, {hews time paft; the other, youthful and bearded,
time to come.

Pliny tells us, that Nltma Pompiiius, king of the Romans,
caufed the ftatue of Janus to be hewed out in fuch fort, that the
fingers of his hands appeared to be 365, to reprefent the number
of the days in the year, and that he was god of it; whereupon,
the firft month in the year was called Januarius, from their god
Janus.

Under the feet of Janus are oftentimes placed twelve altars,
referring to the twelve months of the year, or figns of the zo-
diac, through which Sol makes his revolution.

The Phoenicians, as is reported by Cicero and Macrobius, re-
prefented Janus by the form of a ferpent, holding its tail in its
mouth, and continually turning round.

Some reprefented Janus with four faces, as were thofe fta-
tues which were found in divers places in Tufcany.

By the four faces are fignified the four leafons of the year;
fpring, fummer, autumn, and winter: Which fome think to be
thole of Venus, Ceres, Bacchus, and Vulcan ; and fometimes
the winds with iEoluSj their commander.

JAPANNING. The method of preparing woods for Japan-
ning, i. Take plaifterer's lize, diflblve it over the fire, ma-
king it pretty warm ; and mix with it whiting finely powdered,
until it is of a good body, but not too thick.

2. Take a brufh of hog's hair, and with it lay your work

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