COL

COL

Freezing, their Spring may by that means be en- 1created, and io they may from those n«meroasand large Bubbles we observe in Ice, which occa-sion it to be specifically lighter than Water.

The Expaniion of Water in Freezing is aboutpart ot the Space more than it before took

up.

The Expansive Force of Gold is so great, thatif the Barrel of a Gun be filled with Water, andthen have its Muzzle and Touch-hole well stopt,the Water within the Barrel when either by Na-tural Cold or a Freezing Mixture, it is turned in-to Ice, will break the Barrel in several places, asMr. Boyle and many others have try’d.

That Noble Philosopher contrived several Expe-riments to estimate or measure the Quantity ofrhis Expansive Force, which were made with aBrals Cylinder ot two or three Inches in Diame-ter, into whose Cavity was put a Bladder filledwith Water and strongly ty’d about the Neck,and over it was put a Wooden Plug to stop upthe upper Orifice of the Cylinder, and on the Plugwas put a broad flat Board, on which was laid asmuch Weight as one rime amounted to above anhundred Pound ; another time to an hundred andtwenty Pounds; and another time to two hun-dred fifty four Pounds; and yet in all the Expe-riments, when the Water in the Bladder was turn-ed into Ice, it expanded so as to raise up all thisWeight very conspicuously, as appeared by a Cir-cle designedly made on the Wooden Plug.

He tells us also, that by mingling together zSaline Bodies, each of them purified by the Fire,though there did arile a very great Commotion,Hissing and Explosion, yet a very considerabledegree of Cold was thereby produced ; and tho*he was under an Obligation of not discoveringwhat these Ingredients were, ye he gives a Succe-daneum to that Experiment, by telling us, thatby putting good Salt of Tartar into Spirit of Vi-negar, there was a Struggle, Commotion, andHissing produced, and yet instead of Heat, as isusual in such Cases, a very sensible degree of Coldwas produced.

Sylivius also acquaints us with a Method of pro-ducing Cold by mingling Spirit of Vitriol with a-norher Saline Spirit,

If into 3 or 4 times its weight of Water, youput about half a Pound of Sal Armani ac I ( powder-ed, and stir it about to hasten the Dissolution, sogreat a degree of Cold will, even in the Heat ofSummer, be produced, as is very surprising ; forif you nimbly lhake it, or stir it about, it will pro-duce actual Ice on the outside of the Glass, if youpurposely wet it with Water. This noble Expe-riment Mr. Boyle first made, and thereby plainlyproved the Mechanical Producibleness of the Qua-lity of Cold ; and the Experiment may be of greatuse to cool Wine, &c. in the hot Months, or insuch places where no good Ccllerage is to be had,The Sal A> maniacs, by evaporating the Waterfrom it, may be recovered again, and will servemany times for the lame Experiment.

That Honourable Virtuoso found also, that byshaking Gunpowder in 4 or 5 times its weight ofCommon Water, a considerable sensible Coldnesswould be produced. I

The Learned Dr. Slare produces a considerableExperiment (in Philos Trans. N. 150.) wherebya considerable degree of Cold is made with a ve-ry great Ebullition, as in the former Experimentit is produced without any. The Experiment isonly to paur into any strong Acid (he usod most-

ly Spirit of Verdigreafe) a Quantity of the Vol*

tile Spirit of Human B.ood ; by which means

bc

that

tells us, that he produced so milch Gold, asthe Spirit of Wine in an immersed Thermoltop”descended within half an Inch of the Free* 111 ®Point even in Summer. And this he thinks ve Jingeniously may serve to explain the Phænoins 11ot the cold Fits in Agues.

And since, if into this Mixture he pouredsmall Quantity of Oyl of Sulphur, thewould immediately grow sensibly warm, h e 3improbably suggests, that something like tbis^',occasion the coming of the hot Fit afterward'when the Animal Spirits come to be mixed ^the Blood more copiously than at first in an HFit they can be. , 5

Neither our Senses, nor common Weather-** 1 ' (/es, can enable us to make an Accurate Judg^of the Degree of Cold. ^

For as to our Senses, the Organs of Feelingin a continual state of Mutability, and that Igeneral) appears Cold to us which hath its ®less moved than those of our Hands or Bfd> 'and therefore if one Hand be very Cold, andother moderately Warm, the fame Water, 1 °*,^stance, will appear Warm to the Cold, andthe Warm Hand. . ^

As to Common Weather-Glasses , some part 01Liquor being contiguous to the open Air, ^weight and pressure of the Atmosphere hat ^great an effect on them, that their rising 3 !’>jj,ling depends more on that than on Heat andand therefore they will often mis-insorm us-The Coldness of Places doth not solely nof Pcipally depend on their nearness to the Poles. ^For Alartinius in his Atlas Chinensis faith,in China whose Latitude is no where above 4 * v,grees, the Rivers for 4 Months together ( fl |from the middle of November till the begi nsl "T 0 fl$March ) are so frozen up, that leaden a rddo safely pass on the Ice ; and that the Sh>P^Vessels are all frozen up ; and what is almaskable is, the Frost is usually the result j (one Day’s time, though it require many to t* 1again. .. i

A Dutch Master of a Ship that went ^Degree of the Pole found the Sea open, 30Weather tolerable enough.

COLDNESS Potential’. See Potent idCOLICK, is a vehement pain in the A ^or lower Belly, and takes its Name f roin V : c h >*chiefly affected, vis. the Gut Colon , ^ q( si-'stretch’d, prick’d, and corroded by Windscrementious Humours, either remaining wCavity or fixt to its very Coat. , 3 bo ut

COLLAR of a Ship, is a Rope fast fl *“ j$ f )Sher Beak-head unto which the Dead-wan .^ 0 »seized that holds her Main Stay. ThereCollar or Garland about the Main-M* [h swhich is a Rope wound about there t°

Shrouds from galling. < t hat 15

COLLATERAL Assurance, is a B°"“ br ch*made over and beside the Deed it leperformance of Covenants betweenMan. - .he f* 31

COLLATION, in a Logical Sense, * .tf 3as a comparing of one thing well a [ ot

now-a-days ’tis used for an Handsome ^

tertainment. M s tcr>

COI.LATIONE faFla uni poll mortem ^is a Writ directed to the Justices ot tn c oPleas, commanding them to direct tb el gilW’