A Letter from the Reverend Henry Miles, D. D. F. R. S. to Mr. John Canton, F. R. S.concerning the Late Hard WeatherAuthor(s): Henry MilesSource: Philosophical Transactions (1683-1775), Vol. 48 (1753 - 1754), pp. 525-527Published by: The Royal SocietyStable URL: http://www.jstor.org/stable/105182 .

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t's2s ] taken in the drawingw I, the penumbra:. kA, Ky the Ilidersg Lz L, L) L, pullies, over wSch the line runs) that moves the penumbra. Ms the han- dle, to which both ends of the line are fixed. N, a collar on the--axis of the handle. O, O, the flghts on the pedeRal.

. . . ... .

LXVIIl. 4 Letterfro>r the ReverenG{Herlry Miles, D. D. F. R.S to Mr. Jollll Canton, F. R. S coxcernag the late hard ZYeGttber.

Dear SzvrX kead F&b. 28, ^ Thank you for yollr account of the

x75144 - Rate of your thermometer, on the days moR r markable for cold this feaSon; arid, in a paper inclofedl) have fent you the regilier I made of my thermorneter (fice p. 527.)-, on the fame days, ac cording to your derlre; wllich, if you pleaie) you may lay before the Royal Society, with the few fbllowing retnarks:

You tell rne, you have never before obfcrved fo great a degree of cold; nor }aave Ts for 6eYeral y$ars

before you bey;an to make vour cbSclvation) or lalazce you did. It was in the year I740. w-heru I} occaElon- ally, hung a mercu1-ial theruzometer abroad; and ir February the follosdring year, contiantly. Not having }seard, that anlr one had uid to do fo) I was led to it} bzT a vely fenfible warmth in the air, wllich I per- ceived upon accidentaily looking out at my windowa t good while beire dawy: So that I cannot u}dertake

t's2s ] taken in the drawingw I, the penumbra:. kA, Ky the Ilidersg Lz L, L) L, pullies, over wSch the line runs) that moves the penumbra. Ms the han- dle, to which both ends of the line are fixed. N, a collar on the--axis of the handle. O, O, the flghts on the pedeRal.

. . . ... .

LXVIIl. 4 Letterfro>r the ReverenG{Herlry Miles, D. D. F. R.S to Mr. Jollll Canton, F. R. S coxcernag the late hard ZYeGttber.

Dear SzvrX kead F&b. 28, ^ Thank you for yollr account of the

x75144 - Rate of your thermometer, on the days moR r markable for cold this feaSon; arid, in a paper inclofedl) have fent you the regilier I made of my thermorneter (fice p. 527.)-, on the fame days, ac cording to your derlre; wllich, if you pleaie) you may lay before the Royal Society, with the few fbllowing retnarks:

You tell rne, you have never before obfcrved fo great a degree of cold; nor }aave Ts for 6eYeral y$ars

before you bey;an to make vour cbSclvation) or lalazce you did. It was in the year I740. w-heru I} occaElon- ally, hung a mercu1-ial theruzometer abroad; and ir February the follosdring year, contiantly. Not having }seard, that anlr one had uid to do fo) I was led to it} bzT a vely fenfible warmth in the air, wllich I per- ceived upon accidentaily looking out at my windowa t good while beire dawy: So that I cannot u}dertake

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f 526 3 to aficertain the degree of cold, which 51vc may htre hadXlligllerthal thattitne.

The near agreement between your regiIlee and msne is remarkable, at noon and night, wllen the ob- fervations were made at the fanze houir. The con- flderable difference, on the 7h inItant, a. m. when your t-herulometer was 6 deg. higher, I attribute, partly, to your obSersation being made an hour later than mine, and aficer the fun had bWen above the ho- rizon threezquarters of an hour For I have fc}und} by long obServatic)n that the coldef} time of the day, in general ss betweeIl an howlrs and hGlE an hour) be fc)re the ftin rifes. But9 perhapss this diffcrellese may likewiCe have beeIl occafioned, in part bysvarm Reams tranrpiring the earths at tladt time } for I have Several -times obServed our fudden thaws? this winter, to have been attended with circutniiances, which led -me to think theJr had their rife from ftlch a cauSe. Sorne morningsin a great firoll, have been univerEallyclear before day; when, hasring regiRered the Itation of the mercl3ry) I afterwards freqllently viewed the ther- mometer, and found it to rire 3, 4, or more, deg. when another, which I alwagrs regiIter with it, and is on the fame fide -of the houSe, but at a window of a room one Rory higher, hao not rifen at all. lFrcom whence I expeEed a thaw, a1zd never have been de- ceived. It has, in an hour's tirne) $rown gloudy, and the thaw vifible, and this before fm-riflng, and with_ out any change in the wind; which maketh it prs b ble, it rnuIl llave been cauSed by a fubterranem heat pailng throy the furface of the grs3und.

I beg leave to make one obrervation more) which sX that the air in my cohamber, wb.;ch is moRly ihut

U{?

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- - . st

Reger Qf tQ thermometer at Spital RegiRer of the thermollleter at TootingX in SquareX in Lorldon. Surrey.

Feb. eS.

Day 6. At 7 h b a. m. againR the houSe I 7 Day & At 4;h- 3 a!. m. againR thehollfe>clear t * and in the garden I 9 and never lonvel- aftel.

At 2: p. m. againPt tSe houfe 272 At 2 p. m. clear a8^

At 8 p. m. - - 2I At 8.p. ln. Nloit-t'Y clear - zo Day 7. At S a. m. 20 Day 7. oAt 1.Car 7 a. m. clear - alulot Ij,

At Z p. m. - - 3o At 2 p. m. partlycloudy 3x ArS p.m. - - sB At 8 p.m. clear - - 26

Day 8. At 8 a. mv 26 Ilay 8. A;t 6 aW me C0u(iX - 23 At z p. m. - 32 At Z p. m. cloudy - - 33 At 8 p. m. - - 28 At 8 p. m.cloudy - - 2&

I)ayg.At8a.m. - - z6 Dayg.At6a.m.clotldy - - 23 At Z p.m. - - 35ix At xp.m. cloudy 36t

- [5271 v}p, hath slot, upan a continued thaw, acquired the fame degree of warmth with that abroad, fometilllts, unda three whole days. I amy deax SirX

Your, and the Royal Society's

moR obedient humbIt fervant,

Tooting, Fe.. 28J I754

P. S. On Dec. 3 t. 1a{tX my thermometer Itood at the fame degree, as it did on the 7th inRant, ill

the mornit:lg; whicll times sv;cre tlle colclelt, that I have obSeloved this fealon

Thc Reverend Drv Bradley having obferved his thermometer, at the Royal Oblervatory at Greenwich, to Aand at X 4<;, on the 6th inA.

about 7h.z- a. m. it may be preXrne.dto have ROOd deg. lowes

b¢£ore that tiale of the mornings

lLXlXo.

Herry MilesX

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