Ericsson, John, 1803-1889 · New York : Printed for the author at "The Nation" Press · leaf 670
Vi. Plate 30. See Ciiap. XIX. Rapid-Indkwtiox Actinometer, for ME.vsrRixo THE Intensity of Solar Radiation. Designed by John Ericsson. Manufactured at New York, 18T3. … Plate 31. See Chap. XX. ApPAKATUS IOK ASCKKTAINING TlIK DlATUKlUIANCV OF Fl^JIKS. Designed by Joun Ericsson. Constructed at New York, 1872.
