Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . d from Pinus pumilio, as probably also does theSwedish oil, but the English oil is laevo-rotatory. Birch tar is the product of the destructive distillation of thewood and bark of the white birch (Betula alba). It is chiefly made inRussia, has a strong, penetrating odor and does not solidify. It is PINE FAMILY 39 distinguished from beech wood tar and pine tar in not being com-pletely soluble in 95 per cent ace
Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . d from Pinus pumilio, as probably also does theSwedish oil, but the English oil is laevo-rotatory. Birch tar is the product of the destructive distillation of thewood and bark of the white birch (Betula alba). It is chiefly made inRussia, has a strong, penetrating odor and does not solidify. It is PINE FAMILY 39 distinguished from beech wood tar and pine tar in not being com-pletely soluble in 95 per cent acetic acid, and is distinguished fromjuniper tar by not being entirely dissolved in anilin and in being col-ored greenish with ferric chloride. An oily product is obtained in the destructive distillation ofthe wood of the Prickly cedar (Juniperus Oxycedrus), a tree indigen-ous to the countries bordering the Mediterranean, and is official asoil of cade. It is, a brown, viscid liquid with a tarry odor anda pungent, bitter taste. The oil varies in composition and the onlyconstituent that has been isolated is the sesquiterpene, the phenols which it contains nothing is Fig. 16.—Typical view in the Adirondacks, showing the spire-like balsams(Abies balsamea) and a single white pine (Pinus Strobus). An oil known as kien oil is obtained by the destructive distil-lation of the wood of the root of Pinus sylvestris. The oil is preparedin Germany, Russia, Finland and Sweden, and consists of d-pinene,d-sylvestrine and in addition, in all except the Swedish oil, dipentenehas been determined. Colophony.—Rosin or Resin.—The residue after the distil-lation of the crude oleo-resin (or turpentine) of Pinus palustris andother species of Pinus (Fam. Pinaceae), evergreen trees indigenous tothe southern United States. There are two commercial varieties ofColophony: (1) one which is amber colored and derived from the 40 SCIENTIFIC AND APPLIED PHARMACOGNOSY oleoresin of trees tap
Size: 1782px × 1402px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
