. Lighthouse construction and illumination; . Q. O o. AZIIVIUTHAL CONDENSING SYSTEM FIXED LIGHT OF UNIFORM INTENSITYCHANGING FROM RED TO WHITE WITHOUT DARK INTERVALS. FI>ATK. XXXVl. 1 1 1 .. --- •^ mm -- 1] 1 v; ;;:•:? ? .vv L-^iiiiii: ii:::;i^- >:: %^ ;.? :??:. :;;:: : X \? ?w. /: ::: :;::: V V :?:• \ \; •-tt /.:!; :?•? ^\tf ?L /.;:: ;::::\W ^* /??:? i:-\ > /??: ;:-v ^?;- ;:\ . /; ???f — — ^:: ;::.f ? ^ LL^ , , ? ^M / tV/LU^ Liff/i-t ?^, N / :« \ { 1 \ n%cu Zic^h / N V \ V X / \ a- : trA,i^ / \ / \ /


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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondo, bookyear1881