Extract of a letter, 'The way of making pitch, tarr, rosin and turpentine near Marseilles' in a letter from Thomas Bent to Dr Welsted Bent describes how pitch, tar, rosin, and turpentine are made near Marseilles [France] fromt he sap of pine trees. Subject: Industry Published in Philosophical Transactions as 'The way of making pitch, tarr, rosin and turpentine near Marseilles; communicated in a letter from Nismes, by Mr. Thomas Bent, to Dr. Welsted'. Read to the Royal Society on 21 January 1684. [1684]