...Captain Neves refused his consent to her going, and thus saved her life, which would have been sacrificed, for the poison is very virulent... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...Then it was, in the fifteenth century, that the heart disease ofAfrica developed in its most virulent form...
W.E.B. Du Bois 「The Negro」
...By this time both the Mistress and the Masterwere infected with the most virulent type of theShow Germ...
Albert Payson Terhune 「Lad: A Dog」
...Under its more virulent form it is not to be thus easily got rid of,though even then it is to be subdued...
Dinks, Mayhew, and Hutchinson 「The Dog」
...It is important to observe in thisconnection that 2 out of 4, or 50 per cent, of the cultures obtained fromcases of generalized tuberculosis in children proved virulent for cattle...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Sclavo, Sobernheim, and others have established that injections ofincreasing quantities of virulent cultures into immune animals produced a serumwhich has great protective value against anthrax...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Its employment in houses,therefore, is rarely followed by the annoying odor which attends the useof the more virulent poisons...
David Lantz 「Methods of Destroying Rats」
...Hans knew that this was the name of a virulent poison much in use amongst the Makololo...
Mayne Reid 「The Giraffe Hunters」
...During this period of warfare (so virulent and disgraceful to all theparties), Hogarth's health visibly declined...
John Trusler 「The Works of William Hogarth: In a Series of Engravings」
ランダム例文：
embarrass savings reexamination
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