...From the frequency with which I have been allowed to approach nearer without than with a gun, I believe they know the difference between safety and danger in the two cases... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...The frequency of these lynchings calls attention to the frequency of the crimes which causes lynching...
Ida B. Wells-Barnett 「Southern Horrors」
...When he once more resumes his varied singing, for hours,and sometimes for days, the expression he has discovered is still afavourite one, and recurs with the greatest frequency...
P. L. Sclater 「Argentine Ornithology, Volume I (of 2)」
...Each note is a low, vibrant "wauk," having 100 to 130 pulsesper second and a dominant frequency of 330 to 420 cycles per second (Pl...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...—Pulses vary in frequency from 78 to 240 per second in the callsanalyzed (only primary notes in S...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...phaeota, the calls of Smilisca are characterizedby two major frequencies, one of which is the dominant frequency andthe other is a subdominant frequency (Table 8)...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
..., whereas in the secondary notethe dominant frequency was at 600 cps...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
... owing to the frequency with which they are found in bovines:...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...In both frequency and percentage,scarabaeid beetles constituted the other important food source...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...Crows also serve as scavengers, feeding on carrion and at dumpinggrounds, as indicated by the high frequency of eggshell and mammalianbone in the diet...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...The frequency of such occurrences can be determinedonly by observation; but the time oftheir origin might be approximated in anotherway...
Fannie Hardy Eckstorm 「The Woodpeckers」
...Third, the extremes of breedingactivity are fairly shown as of minute frequency and thus of limitedimportance, which would not be true if just one year were graphed...
Richard F. Johnston 「The Breeding Birds of Kansas」
...Aslightly more refined way of comparing the frequency distributions isto relate them to other, seasonally variable phenomena...
Richard F. Johnston 「The Breeding Birds of Kansas」
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