"Trattato," &c. p. 191, the rest of the passage, it must be admitted, abounds with absurdities.

See "Marcucci Saggio Analitico-chimico sopra i colori," &c. Rome, 1816, and "Taylor's Translation of Merimée on Oil-painting," London, 1839. The last-named work contains much useful information.

Italian writers of the 16th century speak of three kinds. Cardanus says, that of the abies was esteemed most, that of the larix next, and that of the picea least. The resin extracted by incision from the last (the pinus abies Linnæi) is known by the name of Burgundy pitch; when extracted by fire it is black. The three varieties occur in Italian treatises on art, under the names of oglio di abezzo, trementina and pece Greca.