CALCIUM.

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Mix tbem in a receiver so disposed thatit receive a current of carbonic acid gas ;saturate the water with this till it becomes,from being turbid and milky, limpid andtransparent. Preserve it in a well stoppedbottle.

This water is refreshing, and reputedlithontriptic. It has been recommended inthe dysury and ischury occasioned by uri-nary calculi. — Dose, from one pound tosix pounds in the course of twelve hours,alone, or diluted either with one third ofwater, milk or whey, and flavoured if re-quired, with any distilled water.

SUBPROT0-PHOSPHATE OF CALCIUM.

Phospfias Calcis, Subphosphas Calcaría?, Cal-caria phosphorica, Terra Ossium.

1. Produced by nature.

A.

Ossa. — Bones.

Amer.; Amst.; Bavar. ; Hisp. ; Suec;Coxe ; Guibotjrt.

Indépendant!}' of the bones of the mam-mifera?, and even of birds, which are thusgenerally named, we also find th« followingparticularly designated :

1. Leporum Talus. — Astragalus of the Hare.

Synonimes :— Astragale or Talon de Liè-vre, Fr. ; Haasensprung, Germ.

Wirtem. ; Spielmann.

It was supposed to be diuretic.

2. Bufonites, Brontias, Butonius Lapis, Ba-trachiles, Chelonites.

Synonimes :— Bufonite, Crapaudine, Ba-

trachite, Fr. ; Krsetenstein, Germ.Wirtem. ; Spielmann.

These are masses convex on one side,concave on the other, of a pale yellow orgreenish brown colour ; they are the jaws,in a fossile state, of the wolf fish, Anarri-chas Lvpus, Linn.

3. Cornu Cervi. — Hartshorn.

Synonimes :— Corne or Bois de Cerf, Fr. ;Hinschhorn, Germ.; Hiortetakke, Dan.;Cuerno di Ciervo, Span. ; Hertshoorn,Dut. ; Corno del Cervo, Ital. ; Rogieleni, Pol. ; Corno de Veado, Port. ;Hjorthorn, Swed.

Lond. ; Edinb. ; Dubl. ; Amer. ; Amst.;Ant. ; Batav. ; Bavar. ; Belg. ;Bruns.; Dan.; Hisp.; Gall.; Fenn.;Form. Hop. Fr. ; Fuld. ; Genev. ;Hamb. ; Hann. ; Hass. ; Lipp.; Ol-

den.; Lusit. ; Pol.; Borus. ; Ross.;Sax. ; Suec. ; Wirtem. ; Herbip. ;Brucnatelli ; Coxe ; Guibourt ;Paris ; Piderit ; Spielmann.

This is furnished by the Cervus Elaphus,LiNN.; a mammit'erous ruminating animal.It is employed in the form of shavings orfragments ; Raspaiura sen Rassura CornuCervi, Cornu Cervi raspatum.

4. Alois Cornu. — Elk's Horn.

Synonimes :— Corne d'Elan, Fr. ; Elends-horii, Germ.

Wirtem.

5. Cranium humanum. — Human Skull.Hisp. ; Wirtem. ; Spielmann.

The parietal bones of a man who hasperished by sudden death.

A dram of it in powder used to be given.Some used to think that the os triquelrumhad more efficacy.

6. Hippopotamis seu Equi marini Dentés.

■— Teeth of the Hippopotamos.

Synonimes;. — Dents d'Hippopotame oude cheval marin, Fr. ; Wallrosszœhne,Seepferdszœhne, Germ.

Wirtem. ; Spielmann.

These are more probably the teeth ofthe sea horse.

7. Unicornu martnum seu verum, Mono-ceros. — Teeth of the Unicorn.

Synonimes . — Dents de Licorne, Fr. ;Einhorn, Germ. ; Unicornio marino,

Span.

Hisp. ; Wirtem. ; Spielmann.

These are fragments of the defensiveweapon of the Narwhal, Monodon mono-ceros, Linn.

These bones formerly had the reputa-tion of suspending the action of poisons.

The same three pharmacopoeias mention,under the name of Unicorn onlv, the hornof the rhinoceros, Rhinoceros cornu, Uni-cornu, (Nasenhomhern, Germ. ; Cuernode Rhinoceronte, Span.) the conical ex-crescence, black within, solid, dense andheavy, which grows on the nose of the Rhi-noceros Indiens, Cuv. It was formerlyprescribed as an alexipharmic, in the doseof a dram.

8. Dentés Apri. — Teeth of the Wild Boar.

Synonimes : — Dents de Sanglier, Fr. ;Wilde Schweinszcehne, Germ. ; Jabalí.Span.

These are the canine teeth of the SusScrofa, Linn. •