The Scientific Basis of National Progress - LightNovelsOnl.com
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[34] See "_Nature_" No. 600, p. 597, April 28th, 1881.
[35] A fleet of thirty s.h.i.+ps, varying in size from 500 to 5000 tons each, is employed in laying and repairing telegraph cables, and 25 millions of pounds have already been invested in submarine cable enterprises.
[36] See "_Nature_," vol. XXII, page 203.
