. Contributions to the Centennial Exhibition. Plate 16. See Cuai>. VI11. LnSTKUMENT Full TilK AClLAJ. INTENSITY OF TllK Suxs RaY: Designed uv John Ekicsson. Maxufactueed at New Yokk. Flate 17. i>£i: CuAP. IX. Instrhment for showing the Fkebleness of Solai: itY Joiix Ericssox. Coxstructed at Xkw York, isn.

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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinventi, bookyear1876