( 984 ') \ 
by Coeleftial Obfervation, do cxadly note at what i 
Hour, Minute and Second fuch a Meteor as thii blows 
^ up and is extinguilht, the Difference of thofe Times 
Will be the Difference of Longitude of the two Places, 
as is well known. Nor does it require To much as the 
Ufe of a Telefcope, as in the Methods hitherto put in 
practice for that purpofe : fo that if thefe Appearances 
could be predidted, and Notice given of their coming, 
that we might know when to exped them, I lliould 
make no Difficulty to prefer this way of fettling the 
Geography of a Country before all others. 
Having thus fixt one Point in the Line of its 
Mention, let us now confider what courle the Meteor 
took from thence. And firft at th^ Town of Kirkhy- \ 
Stephens y on the Borders of Torkjhire and WeflmoreUnd, 
in a Meridian very little to the Weflward of fVorce/her, 
but about z r more to the North, it was obferved 
to break out as from a dusky Cloud, diredly under . 
the Moon, and from thence to defeend, nearly in a Per- ! 
pendicular, almoft to the Horizon. Now the Moon, be- 
ing at that time in the third Degree of Leo, was about ■ 
half an hour pad the Meridian, and confequently much 
about a point to the Weft, ot S bW : and the Situation 
of Preftain from Kirhy-Stevens being fufficiently near 
upon the fame Point, it follows that the Diredion of 
the Track of the Meteor was according to the Great 
Circle paffing over thofe two Places. 
And this is further confirm’d by the Obfervation of ; 
Sam. Cruup, Efq; Reg. Soc. Soc. who at Tiverton.^ about 
twelve Geographical Miles nearly due North from Exe^ i 
ter, obferved the firft Explofion of this Meteor exad* 1 
ly in his .Zenith, as he was aflured by applying his 
Eye to the fide of his' Door, which he took to be per- 
pendicular, and looking upwards.* And from thence he i 
law it defeend to the Southwards diredly in the fame : 
^ Azi- 
I 
