Plate CXXV. "Sounding apparatus in operation." Note water bottle attached just
above sounding lead. This image depicts operations on the Fish Commission
Steamer GRAMPUS. In: Bulletin of the United States Fish Commission. Vol. IX,
for 1889, pp. 391-459. "Report upon a physical investigation of the waters off
the southern coast of New England ...." by William Libbey, Jr.