Observation of the Eclipse of the Sun, the 1st of April 1764, Made in Surry Street, in theStrand, London: By James Short, M. A. F. R. S.Author(s): James ShortSource: Philosophical Transactions (1683-1775), Vol. 54 (1764), pp. 107-105Published by: The Royal SocietyStable URL: http://www.jstor.org/stable/105533 .

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Philosophical Transactions

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XVIt. OHrvatZon ff tze Ecv Qf tZe Sun, the 14 ef April X ?64, fn > Sur- ry {ireet, zn xhe Strand, London: 47 Janzes Short, M; A Zi: R. S

Read Ayril 5 rl H E morning of the eclip!E I llad '7 3 1 provided the inSruments I ju(lg$d

would le necefliary fbr obServing it in fuch a manner as to be fatisfidtory to the Royal Society as well as to myfelf. A refl^Eting teleScope of two Ret f;cal length, it's aperture foul inches and a half; and it'S magnifying power Seventy times. To this telelLope was fitted a micrometer with an achromic oVjeEt-glaIX of 40 fiet fUcal length.

The right honourable the Earl of MortonZ now Preiident of this Society, was pleafed to honour mie with his company, and alb to obServe; but in diSrent rooms, out of flght and hearingof one another; ISis Lord(hIp uSed a refleSor of only eighteen inches focal length, four inches and a llal-f aperture, and a power of irty times, to the eye-piece of uZhicEr a llelio- Scope was adapted, fbr viesving the Stlll dillinetlyt, without te leaR incon6*enience to the cye.

The condition of the air was very vlnprotnifitag} for, beE1des a general llazinefs of tlle fkEr) tlin llosst moving clouds were Requently paflitlg over the Xun

frOl;n,

[ * T07 ]

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r Q 1

from the South-we{E, fo that it was ljy fitts only that the Sun's limb could be feen dillinEtlyQ I 1lfed a fmoaked-glais to defend my eye, and my obServatt- ons were noted do«tn as follows.

Apptrent fme i 8 tt S the begi-nnin> of the eclipS-e

March31, zI + 33 t by nle. + 36 by LOISD Mrt<3ne

Alt the reR by myfelf; with the b6re mentloned micrometer.

21 112 2s7-xt3 2z, o=diRanceefthecurps 4 Iz I4 32,1 I _ ditto.

I6 7-IS 501 8-dittoj 328 1 - 1() 50 6r ditto. Ig 37-7 45> 4-ditto. 48 42--27 7, X = dltto.

22 I9 s5 -- 25> 33 2-dlttoX f Moon's diameter nearIy

:2 28-29 49 5 > parallel to the horizon a3 58-29 49? 5 _ ditto.

[greateR diRance of Sut 26 lo- 2 58X7-8 und ltoonslirubs

28 28- 2 3t,3_ditto. 3° 43- 2 26, 2 _ ditto.

S Moon's diameter nearlg 3 29 49' 5 = i parallel to the horison¢

23 35 23-^ I 1 IX 4 = diAance of the cuf* 37 33-20 I8 4_ditto. 40 59-I8 5z, 9 _ ditto

- The

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E toS ] The end could not be feen for cloudss lut thc

whole of the eclspte nlay be determirued fVom the above mea!:irements.

Tl<e Sun1¢ diameter parallel to the horizon, abotat an lour lseR>Se nnn on thc day of the eclipfe, was 3Io 59o', 4, dir hazy. Tlle next day at e fame our it was 3 1' S8", 6.

A D D I T I O N.

X$. Xt R OP.g. Meffn'$ dWm¢Xt MaXr"+3^ Xg, t3, 6 3ooP'"' =33 8s;

IO z5 o P. M. - - - :: 33 zo, 7 airMdul"¢ w 6 ooP.M. . _ 33 att6

1t e; o P. M. _ - = 3} 39. :5 air undulig,

. .

*we t . ^

svIIIX un + be Ecife tf de

Sun, April I, T764: fi a Lrx>w Dr. John Bevis) X JoSepEl Salvador, @;

i? # . .

S I R)

Read April 5, H E honour you were pleafed to

176+. 1 do me by fendirig me ;n invitation to obServe the late eclipSe of t}ae Sun at your houSe, and the accommodations I therv met viFh require that I Ikould give you the be account I c8wn of my oblErvation, hover iznperfiEt thloubh the unfa- vourableneIX of tdle wteather.

VOL, LIII. P \t011

E toS ] The end could not be feen for cloudss lut thc

whole of the eclspte nlay be determirued fVom the above mea!:irements.

Tl<e Sun1¢ diameter parallel to the horizon, abotat an lour lseR>Se nnn on thc day of the eclipfe, was 3Io 59o', 4, dir hazy. Tlle next day at e fame our it was 3 1' S8", 6.

A D D I T I O N.

X$. Xt R OP.g. Meffn'$ dWm¢Xt MaXr"+3^ Xg, t3, 6 3ooP'"' =33 8s;

IO z5 o P. M. - - - :: 33 zo, 7 airMdul"¢ w 6 ooP.M. . _ 33 att6

1t e; o P. M. _ - = 3} 39. :5 air undulig,

. .

*we t . ^

svIIIX un + be Ecife tf de

Sun, April I, T764: fi a Lrx>w Dr. John Bevis) X JoSepEl Salvador, @;

i? # . .

S I R)

Read April 5, H E honour you were pleafed to

176+. 1 do me by fendirig me ;n invitation to obServe the late eclipSe of t}ae Sun at your houSe, and the accommodations I therv met viFh require that I Ikould give you the be account I c8wn of my oblErvation, hover iznperfiEt thloubh the unfa- vourableneIX of tdle wteather.

VOL, LIII. P \t011

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