Part 25 (1/2)

Behavior

in gla.s.s-bulb. Gives off much water and tar, and leaves a porous cinder retaining the form of the original fragment.

on platinum foil. Burns slowly and without flame, leaving some ash.

Mineral. Asphaltum

Formula. C + H + O.

Behavior

in gla.s.s-bulb. Fuses with ease affording an empyreumatic oil having an alkaline reaction, and combustible ga.s.ses, and leaves a carbonaceous residue, which is entirely consumed under the blowpipe flame, except a little ash.

on platinum foil. Takes fire and burns with a bright flame and a thick smoke.

Mineral. Elaterite

Formula. C + H.

Behavior

in gla.s.s-bulb. Fuses and gives off water having an acid reaction, naphtha and a tarry fluid, which chiefly condense in the neck of the bulb, and leave a light, pulverulent carbonaceous residue.

on platinum foil. Fuses, takes fire, and burns with a smoky flame, leaving a carbonaceous residue, which under the blowpipe flame, is quickly consumed, with the exception of the ashes.

Mineral. Hachettine

Formula. C + H.

Behavior

in gla.s.s-bulb. Fuses to a clear colorless liquid, which solidifies on cooling and has a tallow-like smell.

on platinum foil. Fuses, takes fire, and burns with a bright flame until entirely consumed.

Mineral. Ozokerite

Formula. C + H.

Behavior

in gla.s.s-bulb. Fuses readily to a clear brown oily fluid, which solidifies on cooling.