. Contributions to the Centennial Exhibition. Flate 17. i>£i: CuAP. IX. Instrhment for showing the Fkebleness of Solai: itY Joiix Ericssox. Coxstructed at Xkw York, Plate la. .Sav; ( iiai: 1.\. SOLiVIi PVKOMETKU, FOU ASCERTAIXIXO THK TKMPICnATrKI: OF TIIF,SOLAU SCKFACE. DESIGNED BY JoiIX ElilCSSON. Constructed at New York, isto.

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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinventi, bookyear1876