Hydrographic sheet, no. 1575, 1883
Hydrographic sheet, no. 1575, 1883
The hydrographic sheet no. 1575 documents collecting of sea bottom specimens from Black Rock Harbor in Connecticut, October 11, 1883. Lt. Com'd'r W. H. Brownson, U.S.N., was commanding the party. The table of data includes date, section number, locality with latitude and longitude, and appearance












