...As there was no want of wood, Pencroft proposed to the engineer to givea double lining to the hull, so as to completely insure the strength ofthe vessel... 
Jules Verne William Henry Giles Kingston 「Abandoned」
...He was feeling happier, for that was being amassed which alone could insure happiness to him...
Various 「Stories by English Authors: Africa」
...But allowing the number of Negroes even to decrease for a time, there were methods which would insure the welfare of the West India islands...
Thomas Clarkson 「The History of the Rise, Progress and Accomplishment of the」
...No expedition had ever been more carefully planned; everything had been well arranged to insure success...
Samuel White Baker 「In the Heart of Africa」
...It would be merely necessary for the traders to request the chief of Ellyria to attack my party to insure its destruction, as the plunder of the baggage would be an ample reward...
Samuel White Baker 「In the Heart of Africa」
...They were wanted as hostages during the coming war, and this rude contrivance was adopted to insure their presence...
Richard F. Burton 「Two Trips to Gorilla Land and the Cataracts of the Congo Volume 1」
..." And to insure the matter he slipped over and saw the Judge...
W. E. B. Du Bois 「The Quest of the Silver Fleece」
... To the friends of the colored race I appeal for help in this matter, hoping that sufficient interest is taken to insure the accumulation of sufficient funds for my purpose...
Charles Thompson 「Biography of a Slave」
...To insure further strength it is advisable to connect the lower ends of the wires by a cross piece of fine wire twisted about each...
A. R. (Arthur Robert) Harding 「Deadfalls and Snares」
...Two years ago I collected a large quantity of these bleachedskulls and distributed them to several of our museums, inorder to insure their preservation...
W. E. Webb 「Buffalo Land」
...Implicit obediencein trifles will insure it in things of more importance...
Dinks, Mayhew, and Hutchinson 「The Dog」
...No bovine animal should be allowed to go out ofthe defined district alive, and all which enter it should be carefullyinspected to insure their freedom from disease...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
..., and the cattle should be held in thevat for two minutes to insure thorough action of the dip...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
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