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PHARMACOGNOSY. 
Constituents. — Volatile oil; a bitter principle; tan- 
nin ; gallic acid, and calcium oxalate. 
Allied Products. — The bark of Hamcmelis Virgini- 
ana is also considerably used; it is collected in spring and 
occurs in market in transversely curved pieces of vary- 
ing length and about 1 mm. thick; externally smooth, 
grayish or dark brown, more or less fissured and 
scaly; inner surface pinkish and longitudinally striate ; 
fracture of the outer part short, of the inner part 
fibrous ; odor slight ; taste astringent, bitter. The con- 
stituents appear to be similar to those of the leaves. 
SALVIA (Sage). 
The leaves of Salvia officinalis (Fam. Labiatse), a 
perennial herb indigenous to Southern Europe, and 
cultivated in England, France, Germany and the 
United States. The leaves are collected when the 
plants are in flower, and carefully dried in the shade. 
Description. — Oblong-lanceolate, 2 to 10 cm. long, 
1 to 2'5 cm. broad; apex acute; base rounded or some- 
what heart-shaped; margin crenulate; upper surface 
grayish green, densely pubescent, midrib and veins 
depressed ; under surface light grayish green, midrib 
prominent, veins of first order diverging at an angle 
of 55° and running nearly parallel to the margin, 
minutely reticulate and densely pubescent ; petiole 1 
to 4 cm. long, upper side grooved, grayish purple ; tex- 
ture velvety, more or less pliable; odor aromatic; taste 
aromatic and bitter. 
Constituents. — Volatile oil about 05 per cent.; 
resin and tannin. 
ERIODICTYON (Verba Santa). 
The dried leaves of Eriodidyon Californicum (Syn. 
E. glutinosum ) (Fam. Hydrophyllacese), an evergreen 
