[ *94 ] 
This innermoft arch Dr. Langwith calls faint va* 
nifhing Purple, and I likewife found, that it fome- 
times appear'd and difappear’d alternately ; but during 
about two Minutes it feem’d to me to be as perma- 
nent as any of the other Colours. 
I flood (fill, and look'd attentively at this Appear- 
ance, during the wholeTime of its Continuance, which 
was near eight Minutes, and could for the greatefk 
Part of that Time difeern all the above-mention'd 
Colours, except the innermofl Purple in the upper 
Parts of the Bow ; but could not diftinguifh any of 
them in thofe Parts of it which were near the Ho- 
rizon, tho’ they were extremely vivid, as was likewife 
the outer Bow, in which the Colours appear'd as 
bright, tho’ not fo well defin'd, as in mod inner 
Rainbows I had feen. 
As I had read Dr. Langwitti s Letter a fhort time 
before I faw this beautiful Appearance, and as I com- 
pared his Account with what I had feen, the fame 
Evening, and again the next Morning, I can the 
better be afiur’d of the exadl Agreement of our Ob- 
lervations. 
On my firffc feeing this Phenomenon, I was fur- 
pris’d, that the Diameter of the Bow appear’d to me 
very fmall, compar’d with that I had feen a little 
before. The Occafion of this 1 think muft have been, 
that the Legs of the firft-mention'd Bow appeared 
to me to terminate at diftant Places : Whereas in the 
latter Appearance I could plainly fee both Ends of 
the inner and outer Bows terminated in the neigh* 
bouring Fields, at a very fmall Diftance from each 
other : Hence, and from my being involv’d in the 
Shower which occaflon'd this Rainbow, I conclude 
it 
