Dr. Samuel Johnson presented the account of Zachariah Williams' attempt
to ascertain the longitude at sea, which he had published under
Williams' name in the preceding year; and, as Warton noted[257], he
entered it with his own hand in the Library Catalogue. The entry is
still to be seen, with a memorandum of its being in Johnson's hand, in
an interleaved, and now disused, copy of the Catalogue of 1738.
[257] Boswell's _Life of Johnson_, edit. 1835, vol. ii. p. 54.