Ericsson, John, 1803-1889 · New York : Printed for the author at "The Nation" Press · leaf 668
FIG. 2. … 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.