166 
ce 
ort 
-HEM—HEL e 
powerful—used in protracted dysentery, and diarrhoa— — 
used in extract and decoction—of the latter, 2 or 3 fluid 
ounces may be.taken frequently. Does not appear to be 
a useful medicine ; and in U. S. seldom employed. 
No, 295—Hematina. Hematine. 
Small brilliant crystals, of a reddish-white colour, and a 
‘slightly astringent, bitter and acrid taste, discovered in the 
~ analysis of the preceding, by Chevreul ; he called it hema- 
tin, to which, for uniformity of termination, I have added 
_ the terminal letter. Besides this principle, Chevreul’s ana- 
lysis proved that logwood contuins a volatile oil, tannin, | 
and two kinds of colouring matter, one of which is soluble 
both in water and alcohol—the other in alcohol only. 
Hematina has never been applied to medicine—an experi- 
mental thesis on it, would entitle the candidate for a de- 
gree, to credit. To obtain hematina, digest logwood rasp- 
iv water, at 125° F, filter, and evaporate to dryness. 
~ Digest the residue for a whole day in alcohol of sp. gr. 
0.837, filter and concentrate by evaporation; then add a 
small portion of water, evaporate a little farther, and leave 
it to itself—crystals of hemutina are formed in abundance. 
No. 296.—HELLEBORUS ALBUS. White Hellebore, 
the root of Veratrum album, which see. 
No. 297.—Hetieporus. 
Cl. 13, Ord. 6. Polygamia Polygynia. Nat. ord. Multisili- — 
quz, Linn. Ranuneulacex, jon 4 
Two species medicinal— 
1. Helleborus Niger. Black Hellebore. ' 
2. Helleborus i wtidus. Stinking or fetid Hellebore. 
No. 298..—HeELLEBorus FHTIDUS. .. The: leaves== 4 
Bears-foot—Stinking Hellebore, Setter- — 
wort, 
Synonym—Helleboraster, Pharm. 1.ond. 2 
a Jeff. Coll. No. 342—figure of the plant, ” 
0. 343. 
Root — beset with numerous dark slender fibres—peren- 
mal. ee 
