_Quotation._--In the Miscellaneous Writings of the celebrated Franklin
(Chambers's People's Edition) I find the following anecdote, in an article
on "The Art of procuring Pleasant Dreams." Franklin says:
"It is recorded of Methusalem, who, being the longest liver, may be
supposed to have best preserved his health, that he slept always in the
open air; for when he had lived five hundred years, an angel said to
him, 'Arise, Methusalem, and build thee an house; for thou shalt live
yet five hundred years longer.' But Methusalem answered and said, 'If I
am to live but five hundred years longer, it is not worth while to
build me an house: I will sleep in the open air as I have been used to
do.'"
From what source did Franklin derive this information?