. Abraham Lincoln and the battles of the Civil War . iiWH mi m ■■. FLOATING CIRCULAR CITADEL, SUBMITTED TO THE FRENCH DIRECTORY IN I798. erroneous that a revolving platform, open orcovered, is a novel design. So far from thatbeing the case, this obvious device dates backto the first introduction of artillery. Sixty-fouryears ago the writer was taught by an in-structor in fortification and gunnery that undercertain conditions a position assailable fromall sides should be defended by placing theguns on a turn-table. Long before buildingthe Monitor I regarded the employment of arevolving structur
. Abraham Lincoln and the battles of the Civil War . iiWH mi m ■■. FLOATING CIRCULAR CITADEL, SUBMITTED TO THE FRENCH DIRECTORY IN I798. erroneous that a revolving platform, open orcovered, is a novel design. So far from thatbeing the case, this obvious device dates backto the first introduction of artillery. Sixty-fouryears ago the writer was taught by an in-structor in fortification and gunnery that undercertain conditions a position assailable fromall sides should be defended by placing theguns on a turn-table. Long before buildingthe Monitor I regarded the employment of arevolving structure to operate guns on boardships as a device familiar to all well-informednaval artillerists. But although constructorsof revolving circular gun-platforms for navalpurposes, open or covered, have a right toemploy this ancient device, it will be demon-strated further on that the turret of the mon-itors is a distinct mechanical combination(Uffering from previous inventions. The cor-rectness of the assumption that revolvingbatteries for manipulating guns on boardflo
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