No, 6, 7 in **E,220a.13 Hassler, Ferdinand Rudolph, 1770-1843,
Corrections to the papers on the Coast survey, pub- lished in the Philosophical transactions of Philadelphia.
N.Y.: the author, 1826, 13 pp. 8°.
Two copies. The Papers referred to may be found in the Transactions of the American philosophical society, vol. 2, new series, pp. 202-420 (Phila., 1825) [**E,145.2 vol. 2, N.S.|.