From the Norway pine, Pinus resinosa, (Torr.?) which occurs widely distributed through the northern and western United States G. B. Frankforter2) obtained a turpentine by the box method, also by extraction of the resinified stumps. Wood poor in resin yielded on the average 6,2 p.c, wood with a medium resin content 8,6 p.c. of turpentine. Stumps yielded 19,4 p.c, wood rich in resin 39,1 p.c, and very rich wood as much as 42 p.c of turpentine. The constants are d20o 0,8137 (printer's error?); [a]D20°+ 4°; nD 1,47869. He obtained 22,1 p.c. of turpentine oil, 77,3 p. c of colophony, and 0,6 p. c water. According to its oil content the turpentine became semi-solid or solid after standing one or two months.
The turpentine oil had the following properties: d20o,8636; [a]d + 17, 39; nD20o 1,47127; boiling temperature 153 to 154°(?). See also under wood turpentine oil p. 98.
According to Wenzell3) the oil of Pinus ponderosa, Laws. = P. resinosa, Torr. (P. ponderosa, Dougl.) contains a terpene (chlorhydrate).
1) Journ. Ind. Eng. Chem. 3 (1911), 818; Journ. Soc. chem. Industry 30 (1911), 1407.
2) Journ. Americ. chem. Soc. 28 (1906), 1467. 3) Pharm. Review 18 (1900), 168.