OF SELBORNE, 
beyond the beginning of Jugujl, yet that they can fiibfift longer 
is undeniable. The fecond is, that this uncommon event, as it 
was owing to the lofs of the firft brood, fo it corroborates my 
former remark, that fwifts breed regularly but once ; fince, was 
the contrary the cafe, the occurrence above could neither be new 
nor rare. 
P. S. One fwift was feen at Lyndon, in the county of Rutland, 
in 1782, fo late as the third of September. 
LETTER LIIL 
TO THE SAME, 
As I have fometimes known you make inquiries about feverai 
kinds of infeds, I fhall here fend you an account of one fort 
which I little expefted to have found in this kingdom. I had 
often obferved that one particular part of a vine growing on the 
walls of my houfe was covered in the autumn with a black duft- 
like appearance, on which the flies fed eagerly; and that the 
fhoots and leaves thus afFeded did not thrive ; nor did the fruit 
ripen. To this fubftance I applied my glafles ; but could not 
difcover that it had any thing to do with animal life, as I at firft 
expeded : but, upon a clofer examination behind the -larger 
M m boughs. 
