Project Gutenberg #57532
Passages from the Life of a Philosopher
Charles Babbage
1864Babbage's autobiography and account of his calculating engines, prepared chapter by chapter from Project Gutenberg HTML.
Project Gutenberg #57532 Public domain in the United States Cover source Local typographic cover created for MojiMori from public-domain source metadata
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The system of occulting light applies with remarkable facility to night signals, either on shore or at sea. If it is used numerically, it applies to all the great dictionaries of the various maritime nations. I may here remark, that there exist means by which all such signals may, if necessary, be communicated in cipher.