Quarry 33S2

whether any one on bourd is <Ğr :I;T- i>et u duiin^
the voyage ill with an infectious dwasr. 1 hose
ships which have not a dean bill are at oike
put into quarantine for vniyi'i;; li ngths of time
until all necessary precautions have been
taken. In the United States,besides thenation
ill there are State regulations for quarantine.

Quasi

] slruciiun. jnainteii.jjiiv, and repair of buildings
<onnecte<l with the Anny; storage and issue of
supplies; operation of utilities; transportation
of the Army by laud and water; and su< h other
duties as the Secretary of War may pi escribe.
QunrterslafT, a strong iron lipped pole
ubout eight fet't Ion;1; and an inch and a half

The health officers of the ports in the seaboard j in diameter fornieily much used as a weapon
cities are endowed with broad powers I>3r the by Km'Jish peasants.

State, and have neaily absolute control of in-
coming vessels and of their passengers.

Quarry and Quarrying, the removal of
stone from its natural environment. When the
material is to be employed in building, it is
usually cut from the rock as near its required
size as possible. When the stone is required
for road metal or for the- limekiln, the easiest
and least expensive methods m;iy be employed.
The methods used are by hand tools, by ex-
plosives, and by channeling and wedging. The
explosive formerly used was gunpowder; but
now some mixture containing guncotton or
nitroglycerine is much in favor. Before the
blocks leave the quany they are roughly
dressed to the required sixes. See MI.NINV,;
BUILDING STONK; MARHUC.

Quart, a measure of capacity, used in Great
Britain and the United States, The U. S.
liquid quart, the fourth part of a gallon, nm-
tains 57.750 cubic inches, while the dry quart,
the thirty-second part of a bushel, contains
67.2006 cubic inches. See WKKIJITS AND
MKASIJRKS.

Quarter Days, days on which, by law or
custom, rents and other quarterly payments
fall due,

Quarter-deck, originally a, smaller deck
situated above the half-deck, It now denotes
that part of the upper deck which extends from

Quartet, a piece of music arranged for four
solo voices or instruments, no one of which
ean be omitted without destroying the proper
effect of the composition. They originated
with Haydn, and were further developed by
M<*/,art, and notably by Beethoven, who per-
fected the art iif part- writ in.'C.

Quart ier Latin, or Latin Quarter, the
student quarter of I'ark

Quartz, a mineral tompo'-ed of silica, SiCX*
(see Sii.fc 'o,\ F, forms the principal ingredient
of sandstone, and occurs also in t lays, granites,
porphyries, and in most other rocks, besides
forming veins or reefs whit h may he rich in
gold or other metals. It is very resistant to
weathering and hence is usually smooth and
glassy in appearance. It occurs both in < ryst-
ah and massive. It is the hardest of (he com-
mon minerals, scrattlus glass easily, and be-
comes positively electrical by friction. It has
also the peculiar property of rotating the
plane of polari/ed lijjht in a direction parallel
to the Ion;.? axes of the crystals 'see I'HLAKU/V
TION OF LK;IIT).

The varieties of quart # are numerous, and
their uses varied. Pure transparent colorless
quartz, known as Rock Crystal, is U,MI! for
spectacles and prisms. Less puiv varieties,
colored by the impurities present, are used in
jewelry. They include amethyst; cairngorm
the mainmast or gangway amidships to the morion, and citrine; rose quart/,; occidental

poop.

Quartering, in heraldry. See Heraldry,
Quartermaster, an army oflker whose
duty is to provide quarters, provisions, storage,

emerald and sapphire-; occidental cutVeye,
etc, Lumps of fused quart/, are especially valu-
able in the, therapeutic application of litfht.
Quartr.ite, or quartz rock, is a whihs gray,

clothing, fuel, stationery and transportation for yellowish rock, composed principally of
for u regiment or other body of troops and to j quarlx, with often a MnalJ amount of feldspar,
superintend the supplies. In the mivy n quar-
termaster is a petty offer who assists in the

steering of the ship,

Quartermaster Corps, a department of
the U, S, Army, created by act of Aug. 24,
1912, by the consolidation of tho former Quar-
tenmister's Department, Suf>siHtem:e Depart-
ment, and Pay Department. Its principal
duties are the purchase and procurement for
the Army of all supplies of standard manu-
facture; the handling of allcemeteriat mutters;
direction of all work pertaining to the am*

mica, chlorite, iron oxides, and other minerals.
It may be r<<o>;;?iigt'<i by its great hardness;
smooth, sinning, lustrous surface; resistance to
acids and to weathering; and its shurp-edged
splintery fracture.

Quasi Contract*, a. term now commonly
employed to denote a class of obligations im-
posed by law, which are also generally known
as VontnidH implied in law.' They diHYT from
true contracts m that a true aiittmt is based
upon cohswit, either actual or implied, while a
quasi contract or contract implied in law is