Decennial Index ^ 1881 — 1890. 
59 
HYDROCONCHININE. See Hydro- 
QUINIDINB. 
HYDROCOTYLE Americana, use in 
Mexico, 86, 168. 
— AsiATiCA, physiological action, 88, 
339— medical uses 90, 195, 473. 
— UMBELLATA uses, 86, 23. 
HYDROGEN peroxide, action on or- 
ganic matters and fermentations, 
83, 21— composition, 82, 215— 
formation from persulphuric acid, 
89, 620 — preparation of pure from 
the commercial article, 88, 447 — 
use as a styptic, 88, 103 — test, 90, 
130 — use in surgery, 83, 22 ; in 
catarrhal affection, 87, 102; in 
whooping cough, 87, 384. 
— SULPHURETTED, free from arsenic, 
85, 551 — apparatus for making, 
90, 300 — use in consumption, 82, 
629. 
HYDROLATUM, of Ph. Mexicana, 
85, 287, 288. 
HYDROLUTIDINE, in cod liver oil, 
88, 511. 
HYDROMETER scales, preparation, 
87, 374. 
H YDRONAPHTHOL, antiseptic prop- 
erties, 86, 93, 511 — chemistry, 86, 
158— reactions, 86, 512. 
HYDROQUINIDINE, preparation, 
properties and salts, 82, 362, 401. 
HYDROQUININE, properties, 82, 
363 — in cinchona bark and in qui- 
nine sulphate, 86, 390. 
HYDROQUINONE (— chinone), de- 
tection in animal substances, 86, 
385 — dose, 88, 511 — influence on 
the heart and blood vessels, 86, 
196— properties, 82, 81. 
cHiNOLiN, preparation and prop- 
erties, 83, 402. 
HYDROXYL AMINE, preservation in 
medicinal soaps, 90, 401. 
HYGRINE, preparation, 87, 455— 
separation from cocaine, 87, 453 — 
characters, 88, 41. 
HYGROPHILA spinosa, use in dropsy, 
88, 139. 
HYMENiEA courbaril, use of resin, 
85,311. 
HYMENODICTYON excelsum, alka- 
loids from bark, 83, 419, 5bO. 
HYMENODICTYONINE, properties, 
83, 580 — chemistry, 86, 517 — 
crystallizable, 84, 552. 
HY08CINE, physiological action, 
82, 630, 89, 81— constitution, 84, 
584— in scopola, 90, 13, 398. 
— hydrobromate, hypnotic, 86, 608 
— physiological action, 87, 612. 
— hydriodate, hypnotic, 87, 443. 
HYOSCYAMINE, action on mercuric 
I chloride and on phenolphthalein, 
1 86, 130— physiological action, 83, 
i 153 — conversion into atropine, 88, 
400— sold for atropine, 90, 118— 
I identity with atropidine, 81, 610 — 
j preparation of crystallized (Duquee- 
nel), 82, 226, 465 — estimation 
! (Mayer's reagent), Lyons, 86, 583, 
586, 87, 4 — present in scopola, 90, 
13, 398. 
HYOSCYAMUS, leaves, comparative 
value of annual and biennial, 90, 
I 519 — constituents, 81, 532 — cultiva- 
I tion in Cambridgeshire, 89, 511 — 
! menstruum, 84, 289, 90, 525— 
i mydriatic action, history, 86, 559— 
odorous principle, 83, 583 — use of 
leaves, 90; 195. 
! — SEED, ash, 87, 28. 
i — Indian, origin and uses, 81, 29. 
HYPERICUM SPECIES, uses in Mex- 
i ico, 85, 603. 
HYPNONE. See Acetophenone. 
I HYPODERMIC injections of Ph. 
! Mexicana, 85, 438. 
I — PEARLS, 86, 343. 
j — See also Ix\JEcrioNS ; solutions. 
I HYPONITROUS oxide, preparation 
I of pure, 89, 132. 
; H YPOPHOSPHITES, estimation 
! (Moerk), 89, 326, 386— tests (Mil- 
j lard) ammon. molybdate, 89, 129 ; 
(Moerk) tungstate of sodium best, 
90, 609, 631. 
— compound with iron (Diehl), 82, 
\ 437. See also Liquor hypopiiosphi- 
j TUM, etc. 
I HYPOQUEBRACHINE, preparation 
i and properties, 82, 367. 
HYSTERIONIOA Baylaiiuen, medi- 
cinal properties, 89, 173 — constitu- 
ents, 90, 488. 
; ICAJA POISON, 82, 251. 
ICE, bacteria, 86, 601 — impurities in 
ordinary ice, 90, 515— substitutes 
for, in external applications, 88, 
177, 213— at high temperatures, 81, 
I 58, 292. 
ICE CRKAM, temperature, 83, 401. 
j ICELAND MOSS. See Cetraria. 
I ICHTHYOL, preparation and uses, 
i 87, 293, 88, 267. 
j ICICA iiEPTAPHYLLA yields tacamaca, 
I 86, 123. 
I IGASURIA, does not exist, 81, 614. 
' IGNATIA, assay, 86, 14— ash, 87, 
j 28. 
