SOLAR TELEGRAPHY.
To the Editor. Sra, —Referring to your paragraph on solar telegraphy in a late issue of the Stab, permit me to mention that it is no new invention. Mr A. 0. Allan, head of the Survey Department in Victoria, introduced it years ago ; and he has conversed, in my presence, with hia assistants at distant stations by means of tho heliotrope ; and Captain Ellery, tho Victorian astronomer, introduced solar telegraphy into the Torpedo and Signal Oorp", of which I was a member (being at the time in charge of tho station at Williamstown), and had the honor of sending the first message with the heliotrope, using the Morse alphabet, to tho commanding officer on the other side of the Bay, during one of our field days, about three years ago.ij I mention these facts in justice to my friends above named, and should be sorry to see the credit of the discovery of solar telegraphy go from those to whom priority of praetice would justly accord it. —I am, &c., J. A. Schott. York place, November 17.
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Evening Star, Issue 3993, 11 December 1875, Page 1 (Supplement)
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179SOLAR TELEGRAPHY. Evening Star, Issue 3993, 11 December 1875, Page 1 (Supplement)
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