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Subject Terms Aids to navigation -- Great Britain.

1. Signalling by Semaphore hand flags : self instruction cards.

No cover image available

Date:: [1914?]
Physical Description:: 32 cards : illustrations ; 9 x 8 cm, in envelope 9 x 11 cm
Collection:: Rare Books and Manuscripts

2. A treatise explanatory of a new system of naval, military and political telegraphic communication of general application : in which a comprehensive numerical dictionary, calculated to espress, in the most east, and most obvious manner ... is applied under a copious illustration, to different descriptions of terrestrial and nocturnal telegraphs on new and simple principles, in order to mature, and render general a science, hitherto in its infancy / by John Macdonald, Esq. F.R.S. F.A.S. late Lieutenant-Colonel and engineer, translator of The French tactics; author of a Treatise on telegraphic communication and of several other works.

No cover image available

Creator:: Macdonald, John, 1759–1831
Date:: 1817
Physical Description:: [10], 77, [78]-[841] p., XIX [i.e.33] leaves of plates (1 folded) : ill. ; 22 cm.
Collection:: Rare Books and Manuscripts