The Natural History of Selborne

Hops visible improved by the thunder.  If the swifts are gone, as they seem to be, they can never breed but once in a summer; since the swallows & martins in general are but now laying their eggs for a second brood.  As young swifts never perch or congregate on buildings I can never be sure exctly whenthey come forth.  The retreat of the swifts so early is a wonderful fact : & yet it is more strange still, that they withdraw full as soon in the summer at Gibraltar!  Swifts sat hard Hune 9th.