American journal of pharmacy . Frangula and Cascara Barks. 127 The description of the gross characteristics of these barks maycontribute Httle to the purpose of the investigation; but these shouldbe stated, as they have a bearing upon {)harmacop(jL*ial description,an item of interest to every worker in pharmacoprjeial revision. Taking the specimens, furnished as above stated, I should saythat the pharmacopoeial description of Rhamnus Purshiana is some-what faulty ; the color of the bark on the outside cannot be con-sidered as a •• brownish gray, but a dark gray; the thickness,instead of being
American journal of pharmacy . Frangula and Cascara Barks. 127 The description of the gross characteristics of these barks maycontribute Httle to the purpose of the investigation; but these shouldbe stated, as they have a bearing upon {)harmacop(jL*ial description,an item of interest to every worker in pharmacoprjeial revision. Taking the specimens, furnished as above stated, I should saythat the pharmacopoeial description of Rhamnus Purshiana is some-what faulty ; the color of the bark on the outside cannot be con-sidered as a •• brownish gray, but a dark gray; the thickness,instead of being about 2 millimeters, is about I millimeter. For. Fig. I, Rhamnus Purshiaua, cross section. .7, epidermis ; b, collenchyma ;r, sclerenchyma ; d, stone cells ; e, medullary ray ; J\ bast bundle ; g, paren-chyma ; //, crystals of calcium oxalate. a description of the external characteristics of the three barks,using the specimens furnished as a guide, I should perhaps adoptin substance the following : Rhamnus Purshiana.—In quills or curved pieces, about 3 to 10centimeters long, and about i millimeter thick ; outer surface darkgray and much encrusted by ashen gray lichen patches, with longi-tudinal grooves from 3 to 10 millimeters apart ; inner surfaceyellowish to light brownish, becoming darker by age; smooth,glossy and finely striate ; fracture short. \ellowish ; in the insitic 128 Frans:ula and Cascara Barks. /Am. Jour. March, 1897. When layer of thick bark, somewhat fibrous and sHghtly bitter,chewed the bark imparts a yellowish color to the saliva. Rhamnus Californica.—In quills or curved pieces about 3 to locentimeters
Size: 2030px × 1230px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookidamericanjournal69phi, booksubjectpharmacy
