A Survey of Lake Erie; in the Years 1817 & 1818 By Lieu't Henry W. Bayfield, R. N. By Lieut. Ashe's Electric determinations 1859, the Longitude of this Chart is about 5' too Westerly Variation in 1860 decreasing in the Western part increasing in the Eastern part 4' annually All ...
A Survey of Lake Erie; in the Years 1817 & 1818 By ...
A Survey of Lake Erie; in the Years 1817 & 1818 By Lieu't Henry W. Bayfield, R. N. All Soundings are in feet N.B. The depth of water varies, according as the seasons are wet or dry; the maximum being from two to three feet. ---insets--- Survey of Put In ...
A Survey of Lake Erie; in the Years 1817 & 1818 By ...