Ericsson, John, 1803-1889 · New York : Printed for the author at "The Nation" Press · leaf 624
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. … Pr.ATk 8. See Vuap. HI.
