...The weather was variable, but the barometer did not fluctuate by suddenmovements, and they could therefore count on tolerable weather... 
Jules Verne William Henry Giles Kingston 「Abandoned」
...As long as easterly winds prevail, all enjoy good health; but in January, February, March, and April, the winds are variable, and sickness is general...
David Livingstone 「Missionary Travels and Researches in South Africa」
..., value is as variable as opinion...
P. J. Proudhon 「What is Property?」
...Property, on the contrary, is the variable element of jurisprudence, its history, its policy...
P. J. Proudhon 「What is Property?」
...The invariable element is obligation, the bond of justice, duty; the variable element is property,—that is, the external form of law, the subject-matter of the contract...
P. J. Proudhon 「What is Property?」
...The eggs are quite variable in size...
Chester A. Reed 「The Bird Book」
...They are quite variable in size, averaging2...
Chester A. Reed 「The Bird Book」
...Jerdon's descriptionis as follows: "Ground colour variable, usually pale greenish brownor dull clay brown, changing to pale tawny on the lower parts, andlimbs internally, almost white however in some...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...its form is even more variable, and in the present genus a similar uncertainty exists...
William Swainson 「Zoological Illustrations, Volume II」
...tumida, as defined by Goodwin(1958); we are not wholly convinced that these are valid species(rather than variable geographic races of the same species)...
J. Knox Jones 「Noteworthy Records of Bats From Nicaragua, with a Checklist of the Chiropteran Fauna of the Country」
...The food of the coon is variable, to conform with conditions ofdifferent sections, but wherever found, they feed on both vegetable andanimal food...
A. R. Harding 「Fur Farming」
...In tadpoles having fully developed mouthparts the tooth-row formula of2/3 is invariable, but the coloration is highly variable...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...The coloration in life is as variable as it is in preservative...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...Walking birds, feeding both on the ground and in trees; bill slender,grooved, nostrils opening in a fleshy membrane; tail variable, short andsquare, or long and pointed; feet stout, often reddish...
Frank M. Chapman 「Color Key to North American Birds」
...Calls, pit, chit, or chack;song, variable, often wichity, wichity, wichity...
Frank M. Chapman 「Color Key to North American Birds」
...The females in the series are highly variable in colorindividually, but are on the average paler than C...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
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