O R D 
dered to be drawn into the field, or fent upon any parti¬ 
cular fervice. He is colonel en fecond of the royal regi¬ 
ment of artillery; and has a fecretary, and feveral inferior 
officers and clerks, under him. 
The Surveyor-General infpefts the (lores and provifions 
of war in the cuftody of the ltorekeeper, and fees that they 
are ranged and placed in fuch order as is mod proper for 
■their prefervation. He allows all bills of debt, and keeps 
a check upon all labourers and artificers’ work; fees that 
the (lores received are good and ferviceable, duly proved, 
and marked, as they ought to be, with the king’s mark. 
To sffill him in the bufinefs of his office, he has under 
him various clerks, and other inferior officers. 
The Clerk of the Ordnance is an officer whofe function 
is to record all orders and inftrudlions given for the go¬ 
vernment of the office ; all patents and grants; the names 
of all officers, clerks, artificers, gunners, labourers, &c. 
who enjoy thofe grants, or any other fee for the fame; to 
draw all eftimates for provifions and fupplies to be made, 
and all letters, inftrudlions, commiflions, deputations, and 
contracts, for his majefty’s fervice ; to make all bills of 
impreft and debentures, for the payment and fatisfadlion 
of work done and provifions received in the faid office ; 
and quarter-books for the falaries and allowances of all 
officers, clerks, &c. belonging to the office ; and to keep 
journals and legers of the receipts and returns of his 
rhajelly’s (lores, to ferve as a check between the two ac¬ 
countants of the office, the one for money, and the other 
for (lores. 
The Storekeeper takes into his cuftody all his majefty’s 
ordnance, munitions, and (lores, belonging thereto; he 
indents and puts them in legal fecurity, after they have 
been furveyed by the furveyor-general; any part of which 
he mud not deliver without a warrant figned by the pro¬ 
per officers: nor mult he receive back any (lores formerly 
ifiued till they have been reviewed by the furveyor, and 
registered by the clerk of the ordnance in the book of re¬ 
mains ;P.nA he muft take care that whatever is under his 
cuftody be kept Cafe, and in fuch readinefs as to be fit for 
fervice upon the mod peremptory demand. 
The Clerk of the Deliveries draws all orders for delivery 
of any (lores, and fees them duly executed; charges by 
indenture the particular receiver of the (lores delivered ; 
and, in order to difcharge the Storekeeper, regifters the 
copies of all warrants for the deliveries, as well as the pro¬ 
portions delivered. 
The 1 'reafurer and Paymafter receives and pays all mo¬ 
neys, both falaries and debentures, in and belonging to 
this office. In his office are feveral clerks, ordinary and 
extraordinary, for the difpatch of bufinefs. The ord¬ 
nance-bills, commonly called ordnance-debentures, are 
bills iffiued by the board of ordnance on the treafurer, 
for the payment of (lores, See. Thefe are not payable at 
any certain time, and do not bear any intereft, fo that the 
dilcount upon them is often very high; but they are Sel¬ 
dom much above two years in arrear. 
OR'DONNANCE, f [French.] In architedlure, the 
composition of a building, and the difpofition of its 
parts, both with regard to the whole and to one another; 
or, as Mr. Evelyn exprefles it, determining the meafure 
of what is affigned to the feveral apartments. Thus, or- 
donnance is the judicious contrivance of the plan or 
mould ; as, when the court, hall, lodgings, See. are neither 
too large nor too fmall; but the court affords convenient 
light to the apartments about it, the hall is of fit capa¬ 
city to receive company, and the bed-chamber. See. of a 
proper fize. When thefe divisions are either too great or 
too fmall, with relpedl to the whole, as, where there is a 
large court to a little houfe, ora fmall hall to a magni¬ 
ficent palace, the fault is faid to be in the ordonnance. 
Ordonnance, rn painting, is ufed for the difpofition 
of the parts of a pidlure, either with regard to the whole 
piece, or to the feveral parts, as the groups, mafles, con¬ 
trails, See .—In a hiftory-piece of many figures, the general 
defign, the ordonnance or difpofition of it, the relation of 
Vol. XVII. No. 1211. 
ORE 721 
one figure to another, are of difficult performance. Dry - 
den's Life of Plutarch. 
OR'DORF, a town of Saxony, in Thuringia: ten miles 
fouth of Gotha. 
ORDOV'ICES, in ancient geography, inhabitants of 
that country which is now called North Wales, and con¬ 
tains the counties of Montgomery, Merioneth, Carnar¬ 
von, Denbigh, and Flint. Thefe Ordovices, or, as Ta¬ 
citus calls them, Ordeuices, are fuppofed to have been ori¬ 
ginally of the fame tribe or nation with the Huicii ot 
War • ickfhire, who were under fome kind of fubjedlion 
to the Cornavii; but the Huicii of North Wales, bdng 
a free and independent people, were called Ordh-IIuici, 
or the Free Huici. When they were invaded by the Ro¬ 
mans, they Showed a fpirit worthy of their name, and - 
fought with great bravery in defence of their freedom 
and independence. Though they fuilained a great defeat 
from the Roman general Ollorius, in conjundlion with 
the Silures, they maintained the war for a considerable 
time, until they were finally fubdued with great Slaugh¬ 
ter by the renowned Agricola. The country of the Or¬ 
dovices waas comprehended in the Roman province which 
was called Britannia Secunda. 
ORDU'NA, a town of Spain, in the province of Bif- 
cay ; forty-two miles fouth-weft of St. Sebaftian, and fiStv 
north ealt of Burgos. Lat. 4.2. 56. N. Ion. 2. 57. W. 
OR'DURE, f. [ordure, Fr. from forties, Lat. Skinner 
and Dr. Johnfon. —From the ancient French, ord, nally ; 
which Borel derives from the Lat.fordidus , but Serenius 
from the Icel. a;. r, or, filth. TuddS] Dung; filth.—Work¬ 
ing upon human ordure, and by long preparation ren¬ 
dering it odoriferous, he terms it zibetta occidentalis. 
Brown. 
Gard’ners with ordure hide thofe roots 
That (hall firft Spring and be mod delicate. Shukcfpeare, 
ORE , f. [ope, or opa, Sax. oor. Dut. a mine.] Metal 
unrefined ; metal yet in its foffil Slate.—Quickfilver ore 
of this mine is the richeft of all ores I have yet feen ; for, 
ordinarily it contains in it half quicksilver and fome- 
times, in three parts of ore, two parts ot quickfilver. 
Brown. 
Round about him lay on every fide 
Great heaps of gold that never would be fpent ; 
Of which Some were rude ore, not purify’d 
Of Mulciber’s devouring element. Spenfer. 
Metal: 
The liquid ore he drain’d. 
Firft his own tools ; then what might el(e be wrought, 
Fufile, or grav’n in metal. Milton's P. L. 
Ores, in mineralogy and metallurgy, fignify thofe 
mineral i'ubllances found in the earth from which metals 
are procured. Metallic Subilances are found, either native, 
that is, pure, and uncombined with other fnbftances, or 
alloyed with other metals, or combined with oxygen, or 
fulphur, or with acids; and thus it appears, that metals 
exiil in ores, in four different Slates. 1. In the metallic 
Slate, when they are either pure, or combined with each 
other, as in the (late of alloy. 2. In the Slate of an oxyd. 
3. Combined with fulphur, in the (late of fulphuret. 4. 
With acids, forming Salts. 
But ores are rarely found exadlly in the Slate of combi¬ 
nation now mentioned. It feldom indeed happens, that 
they are not mixed with various earthy minerals. As all 
minerals are extracted from ores, it is of great importance 
to be acquainted, in the firft place, with the materials of 
which they are compoled, as they are obtained from the 
earth, with the view of afeertaining the nature and pro¬ 
portions of the various ingredients which enter into the 
composition ; and, in the Second place, to know the fim- 
pleft and ealiell proceffes by which the metals may be 
feparated, for the purpofes of economy and manufadlures. 
Hence, in the treatment of ores, two objects are in view. 
The firft is their analysis, which is the province of the 
8 X chemical 
