...
Jerdon states that these squirrels are mostly seen in the autumn whenthe chestnuts, of which they are very fond, ripen... 
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...From the time the early apples ripen these butterfliesmay often be seen beneath the orchard trees, sippingthe liquids of the fallen and decaying fruit...
Clarence M. Weed 「Butterflies Worth Knowing」
...—Poulticing to ripen the abscess...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...The spring cereals ripen in thesouth earlier than in northern India, so that the cheerfulbuntings are able to perform their migratory journey by easystages and find abundant food all along the route...
Douglas Dewar 「A Bird Calendar for Northern India」
...I know wild apples that ripen in August, and that do not need, if it could be had, Thoreau's sauce of sharp November air to be eaten with...
John Burroughs 「Birds and Bees, Sharp Eyes and, Other Papers」
...It becomes,at last, a pretty, diaphanous opal sphere, while the berries whichhave not been injured ripen on the plant and acquire a rich scarlethue...
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
...Allsuch shadows I have avoided, and presentednothing but a dismounted cannon, and somegrowing wheat which should never ripen...
Dolores Bacon 「Pictures Every Child Should Know」
...The espaliers and the standards allAre thine; the range of lawn and park:The unnetted black-hearts ripen dark,All thine, against the garden wall...
Alfred, Lord Tennyson 「The Early Poems of Alfred, Lord Tennyson」
...The sun's gracious beams supply the magic power that enables the corn togrow and ripen...
Robert Stawell Ball 「The Story of the Heavens」
...As the Indian corn began to ripen the convicts recommenced their depredations, and many were punished with a severity seemingly calculated to deter others, but actually without effect...
David Collins 「An Account of the English Colony in New South Wales, Vol. 1」
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