4. (Alcoholic; EXTRACTUM MARRUBII ALCOHOLICUM, L.)--_a._ From a tincture
made with proof spirit. Said by M. Thoriel to possess considerable power
as a febrifuge.--_Dose_, 5 gr. to 20 gr.
_b._ (Ph. Lusit.) From a tincture made with a mixture of rectified spirit,
1 part, and water, 7 parts. Inferior to the last.
=Extract of Ind'ian Hemp.= _Syn._ CANNABINE, HEMP RESIN, ALCOHOLIC EXTRACT
OF INDIAN HEMP; EXTRACTUM CANNABIS INDICÆ, E. C. I. ALCOHOLICUM, RESINA
CANNABIS, L. _Prep._ 1. (B. P.) Indian hemp in coarse powder, 1;
rectified spirit, 5; macerate seven days, press out the tincture, distil
off the spirit, and evaporate.--_Dose_, 1/4 to 1 grain in pill.
2. (O'Shaughnessy.) The dried resinous tops of Indian hemp ('GUNJAH') are
boiled in rectified spirit until all the resin is taken up, when most of
the spirit is distilled off, and the evaporation completed by the heat of
a water bath. 1 cwt. yields about 7 lbs.
3. (Robertson). By slowly acting on the 'gunjah' with the vapour of
alcohol, by a species of percolation; the spirit of the resulting tincture
is partly removed by distillation, and the rest by slow evaporation at a
temperature not above 150° Fahr. 1 cwt. yields about 8 lbs.--_Dose_ of the
last two, 1 to 3 gr., gradually increased.
4. (Messrs Smith.) The bruised 'gunjah' is exhausted with tepid water,
then with a solution of carbonate of soda (1 of carbonate to 2 of gunjah),
and next with pure water; it is then pressed, dried, and exhausted by
displacement with rectified spirit; the tincture is agitated with a milk
of lime (containing 1 oz. of lime for every lb. of gunjah), and, after
filtration or decantation, any retained lime is precipitated by a little
sulphuric acid in slight excess; the tincture is next agitated with animal
charcoal, and again filtered; most of the spirit is now removed by
distillation, and 3 or 4 times its bulk of water being added, the
remaining spirit is removed by a gentle heat; lastly, the remaining water
is poured off, and the resin remaining washed with fresh water, and dried.
Product, 6%.--Commencing dose, 1/4 gr.
3. (Purified; EXTRACTUM CANNABIS INDICÆ PURIFICATUM, L.--Ph. D.) From the
crude extract of Indian hemp, as imported ('CHURRUS'), 1 oz.; rectified
spirit, 4 fl. oz.; dissolve, and after defecation, decant, and evaporate.
_Obs._ The preparations of Indian hemp are said to be anæsthetic, anodyne,
hypnotic, stimulant, phrenic, and aphrodisiac, and, in overdoses, to
produce catalepsy. They have been recommended in hysteria, hydrophobia,
cholera, rheumatism, chorea, convulsions, and various other painful
spasmodic and nervous affections of a serious character. According to the
observations of Dr O'Shaughnessy, 1 gr. of the extract produced catalepsy
in a rheumatic patient. The extract prepared with the plant grown in our
botanic gardens has quite a different effect to that of the Indian plant;
and it also appears that the inhabitants of this country are less
susceptible to its action than those of India, and consequently bear the
drug in larger doses. This hemp is known in India as the 'increaser of
pleasure,' the 'exciter of desire,' the 'cementer of friendship,' the
'causer of a reeling gait,' the 'laughter-mover,' &c. See EXTRACT OF HEMP
(_above_), HEMP, &c.
=Extract of Ipecac'uanha.= _Syn._ EXTRACTUM IPECACUANHA, L. _Prep._ 1. (P.
Cod.) From ipecacuanha, as EXTRACT OF BOX.--P. Cod.
2. (Ph. Bor.) As EXTRACT OF HENBANE SEEDS. Expectorant and
emetic.--_Dose_, 1-1/2 to 8 gr.
=Extract of I'ron.= _Syn._ EXTRACTUM FERRI, E. MARTIS, L. _Prep._ 1. From
tincture of tartarised iron.--_Dose_, 2 to 10 gr.; as a chalybeate tonic.