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An apparatus for determining the amount of oil contained in any substance, or for ascertaining the degree of purity of oil.

A method of determining the presence or absence of life in an animal organism with a current of electricity, by noting the presence or absence of muscular contraction.

g to certain veins of feldspathic or porphyritic rock crossing metalliferous veins in the mining districts of Cornwall; as, an elvan course.

Looking, or narrowly examining; prying. [Obs.] "Those emissitious eyes." Bp. Hall.

An instrument for examining the interior of the rectum, the urethra, and the bladder.

The art or process of examining by means of the endoscope.

The art or process of determining he constituents of a gaseous mixture by means of the eudiometer, or for ascertaining the purity of the air or the amount of oxygen in it.

The act of examining, or state of being examined; a careful search, investigation, or inquiry; scrutiny by study or experiment.

Serving or intended to explore; searching; examining; explorative. Sir H. Wotton.

nches of industry are conveniently designated extractive: e.g., agriculture, pastoral and mining pursuits, cutting of lumber, etc. Cairnes.

; his farewell bow. Leans in his spear to take his farewell view. Tickell. Farewell rock (Mining), the Millstone grit; -- so called because no coal is found worth working below this stratum. It is used for hearths of furnaces, having power to resist intense heat. Ure.

Invested with the power of determining destiny. [Obs.] "The fated sky." Shak.

loose powder of the same composition, all inclosed in waterproof wrappers. It is used for mining.

atures of landscape; also, a kind of geomancy dealing with these influences, used in determining sites for graves, houses, etc.

uliar beat of the drum to summon men to their quarters in case of fire. -- Fire setting (Mining), the process of softening or cracking the working face of a lode, to facilitate excavation, by exposing it to the action of fire; -- now generally superseded by the use of explosives. Raymond. -- Fire ship, a vessel fille…

separating the frontal from the temporal lobe. See Illust. under Brain. -- Fissure vein (Mining), a crack in the earth's surface filled with mineral matter. Raymond.

oad rail consisting of a simple flat bar spiked to a longitudinal sleeper. -- Flat rods (Mining), horizontal or inclined connecting rods, for transmitting motion to pump rods at a distance. Raymond. -- Flat rope, a rope made by plaiting instead of twisting; gasket; sennit.

other hard stones. -- Flint mill. (a) (Pottery) A mill in which flints are ground. (b) (Mining) An obsolete appliance for lighting the miner at his work, in which flints on a revolving wheel were made to produce a shower of sparks, which gave light, but did not inflame the fire damp. Knight. -- Flint stone, a hard,…

ane. -- Float case (Naut.), a caisson used for lifting a ship. -- Float copper or gold (Mining), fine particles of metallic copper or of gold suspended in water, and thus liable to be lost. -- Float ore, water-worn particles of ore; fragments of vein material found on the surface, away from the vein outcrop. Raymond…

water that drives a mill wheel; or an artifical channel of water for hydraulic or placer mining; also, a chute for conveying logs or lumber down a declivity.