Encyclopaedia Britannica, 11th Edition, "Demijohn" to "Destructors" / Volume 8, Slice 2

by Various

[6] Compte Rendu des Travaux de la Société des Ingénieurs Civils de France, folio 775 (June 1897).

[7] Patent No. 15,482 (1885).

[8] Patents No. 1955 (1867) and No. 378 (1879).

[9] Patent No. 4896 (1891).

[10] Patent No. 20,207 (1892).

[11] Patents No. 18,398 (1892) and No. 12,990 (1892).

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