Ericsson, John, 1803-1889 · New York : Printed for the author at "The Nation" Press · leaf 622
Plate G. See Chap. II. … I 3 5. > en o w ^ i 53 S 2 B Plate 7. Skf. Ciiav. II. ACTINOMETEU, FOR MEASURING THE INTENSITY OF SoLAU RaDIATIOX. Designed by John Ericsson. MANriACTrnnn at Xkw Yoi:k, i870.
