Note 232 — SECTION VII. ZOOLOGICAL NOTES (ANIMALS WILD AND TAME)—NOTES ON FLORA—AGRICULTURE AND CATTLE-BREEDING—FISHERIES AND FISHING—INDUSTRY AND EMIGRATION.
Reading edition
R. J. Walker, quoted by Peirce. Dr Carpenter and Professor Wyville Thomson, in the “Lightning,” made the remarkable discovery that sea-water at different depths, is of different temperatures—the older theory being that the sea was of a uniform temperature of 39° (F.).