QUA 



QUA 



four times as great. This quantity of mut- 

 ter is best discoverable by the absolute 

 weight of bodies. 



The quantity of motion in any body is 

 the factum of the velocity into the mass, 

 or it is a measure arising 1 from the joint 

 consideration of the quantity of mutter, 

 and the velocity of the motion of the bo- 

 dy ; the motion of any whole being the 

 sum or aggregate of the motion in all its 

 several parts. Hence, in a body twice as 

 great as another, moved with an equal ve- 

 locity, the quantity of motion is double; 

 if the velocity be double also, the quan- 

 tity of motion will be quadruple. Hence 

 the quantity of motion is the same with 

 what we call the momentum or impetus 

 of a moving body. 



QUANTITY, in grammar, an affection 

 of a syllable, whereby its measure, or the 

 time wherein it is pronounced, is ascer- 

 tained ; or that which determines the syl- 

 lable to be long or short. Quantity is al- 

 so the object of prosody, and distinguish- 

 es verse from prose ; and the economy 

 and arrangement of quantities, that is, the 

 distribution of long and short syllables 

 make what we call the number. 



The quantities are distinguished, among 

 grammarians, by the characters o, short, 

 a's per ; and -, long, as ros. There is al- 

 so a common, variable, or dubious quan- 

 tity ; that is, syllables that are one time 

 taken for short ones, and at another time 

 for long ones, as the first syllable in Atlas t 

 paires, &c. Feet are made up of quanti- 

 ties. 



The quantity of syllables is known two 

 ways. 1. By rules for that purpose. And, 

 2. By authority. The rules for this end 

 are taught by that part of grammar call- 

 ed prosody ; the authority made use of 

 in this case is no more than examples 

 from, or the testimony of, approved au- 

 thors ; and is never used but either when 

 the rules are deficient, or when we are 

 unacquainted with them. 



QUANTUM meniit, is an action on the 

 case, or a count in assumpsit grounded 

 upon the promise of another, to pay him 

 for doing any thing, so much as he should 

 deserve or merit. 



QUANTUM valebant, in like manner, is 

 where goods and wares sold are delivered 

 by a tradesman at no certain price, or to 

 be paid for them as much as they are 

 worth in general ; and the plaintiff is to 

 aver them to be worth so much. 



QUARANTINE, a trial which ships 

 undergo when suspected of having on 

 board persons infected with a pesti- 

 lential disease. Physicians are occa- 



sionally consulted on this subject by 

 government, who regulate this unpleasant 

 restriction on the commerce of the coun- 

 try by their judgment, as to the period of 

 time within which the effects ot any infec- 

 tion received by any individual on board 

 would be shown. 



The usual quarantine is forty days. 

 This may be ordered by the king, with 

 the advice of the privy council, at such 

 times, and under such regulations, as he 

 judges proper. Ships ordered on quaran- 

 tine must repair to the place, appointed, 

 and must continue there during the time 

 prescribed, without having any inter- 

 course with the shore, 'except for neces- 

 sary provisions, which are conveyed with 

 every possible precaution. When the 

 time is expired, and the goods opened 

 and exposed to the air as directed, if 

 there be no appearance of infection they 

 are admitted to port, bliips infected with 

 the pestilence must proceed to St. Helen's 

 Pool in the SciUy islands, and give notice 

 of their situation to the Custom-house 

 officers, and wait till the king's pleasure 

 be known. Persons giving false informa- 

 tion to avoid ptiiorming quarantine, or 

 refusing to go to -he place appointed, or 

 escaping; also officers appointed to see 

 quarantine performed, deserting their 

 office, neglecting their duty, or giving a 

 false certificate ; suffer death as felons. 

 Goods from Turkey, or the Levant, may 

 not be landed without license from the 

 king, or certificate that they have been 

 landed and aired at some foreign port. 



QUAKE impedit, in law, a writ which 

 lies for him that has purchased a manor, 

 with the advowson thereto belonging, 

 against him that disturbs him in the right 

 of his advowson, by presenting a clerk 

 when the church is void. 



QUARRY, a place under ground, out of 

 which are got marble, free-stone, slate, 

 lime stone, or other matters proper for 

 buildings. Quarries of free stone are in 

 many places opened, and the stone 

 brought out in the following manner : 

 they 'first dig a hole in the manner of a 

 well, twelve or fourteen feet in diameter, 

 and the rubbish drawn out with a wind- 

 lass in large osier baskets, they heap up 

 all around ; placing their wheel, which is 

 to draw up their stones, upon it. As the 

 hole advances, and their common ladder 

 becomes too short, they apply a particular 

 ladder for the purpose. When they have got 

 through the earth, and are arrived at the 

 first bank or stratum, they begin to apply 

 their wheel and baskets to discharge the 

 stones as fast as they dig through them. 



