...This substance is used all over the country, though in some places the venom of serpents and a certain bulb, 'Amaryllis toxicaria', are added, in order to increase the virulence... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...The larvæ of the genusAdolia are also hairy, and sting with virulence...
J. Emerson Tennent 「Sketches of the Natural History of Ceylon」
...But it will not be foreign to our purpose tostate several influences which are supposed, if not actually to cause, atall events, greatly to increase its virulence...
Dinks, Mayhew, and Hutchinson 「The Dog」
...The virulence of the poison does the rest...
J. H. Fabre 「The Wonders of Instinct」
...The virulence is not great enough to kill a sufficiently high percentageof rats that eat food containing the microorganisms...
David E. Lantz 「House Rats and Mice」
..."Well I'll be—Interference! Deliberate blanketing! The rats! The—"He blazed into a torrent of profanity whose imaginativeness wasmatched only by its virulence...
Arthur Leo Zagat 「The Great Dome on Mercury」
...In the year 1789 they were visited by a disorder which raged among them with all the appearance and virulence of the small-pox...
David Collins 「An Account of the English Colony in New South Wales, Vol. 1」
ランダム例文：
Burnham identifier coal
便利！手書き漢字入力検索
この漢字は何でしょう？？