Mining Terms. 169 
Huave. The horizontal dislocation of a lode. 
Hieu Exprostves. Those of greater detonating 
force than black powder. 
Horsz. A mass of country rock between the en- 
closing walls of a vein. To constitute a Horse, “It is 
necessary that the walls should converge about the mass 
below and at both ends, but the greatest known horses 
do not converge over head. The two walls coming to the 
surface are in some instances 1,000 feet apart.” Testi- 
mony of Clarence King in the Dives Case. 
Huper. An iron bucket for hoisting. 
Hypravics. That method of placer mining where 
the gravel is washed by a stream operating under hy- 
draulic pressure. 
Hounery. Barren. 
ImpreGnation. A metallic deposit having unde- 
termined limits in no way sharply defined. Von Cotta. 
Incurne Drirr. A drift run at an incline to sub- 
serve the drainage. (2) A misnomer applied to a slope 
sunk upon a deposit having slight departure from the 
horizontal. 
INFILTRATION THEORY. That which refers the 
origin of the ore to the deposit of mineral from water 
holding it in solution. 
IngEcTION THEORY. That which refers the or- 
igin of the ore to the introduction of igneous fluid. 
In Puace. In Situ. In words used in Section 
2329 of the U. S. Revised Statutes, qualifying the words 
“quartz or other rock,” and to distinguish lode from 
placer claims. 
Iron Har. (Hisen Hut.) The outcrop of a lode, 
it being usually colored by the decomposition of the 
iron. German. Von Cotta. 
Jig. A machine for concentrating ore by means 
of sieves. Corn. 
Jump. To take forcible possession of a claim. (2) 
To relocate abandoned property. 
Kipsuie. A kind of hoisting bucket. 
