( 22 p ) 
VIII. Aii Account of a Rainbow feen on the 
Ground. Communicated in a Letter from the 
Reverend Ben). Langwirh, D. D. ReBor of 
Petworthj to Dr. Jurin, Seer. R. S. 
Pet worth , Dec. 17. 17 21.' 
O N the 7th of September lad, about Nine in the 
Morning, I was riding with fome Friends over 
i 0 K'K a { t nea " °& fd - The Morning had been 
Milty, and the Grals was very wet with the Dew. We 
had not been long out, before the Air 'clear’d up r 
and the Sun began to fhine very bright. We foon af- 
ter had the Satisfaction of feeing a Rainbow upon the 
Ground, whofe Colours were very near as lively as 
thole ot the common Iris : This was extended upon 
the Ground for fome Hundreds of Yards, and the 
Colours were fo drong, that it might have been feen 
much farther, had it not been terminated by the Bank 
and Hedge of the Field. It is hardly worth while to 
obierve, that it continually chang’d its Flace as we 
mov d along, fmee this is no more than happens in 
other Rainbows, The more remarkable Particulars 
were thefe : 
id. That the Figure of it was not round, but ob^ 
long ; being as I conceive , a Portion of an Hy.- 
perbola. y 
z. That the Convex Part of it was turn’d towards 
the Eye, and the Vertex was at a (mall Dirtance be- 
fore us - J. That 
