...Slowlythe mass separated into two rings, the outer of which was composedof shes and the very young, the inner of mature bulls... 
Edgar Rice Burroughs 「Tarzan the Untamed」
...Heller, the mature buck differs in no essential from the tropical sable...
Stewart Edward White 「African Camp Fires」
...A little more than a month later they mature into butterflieswhich are Ajax, the summer form...
Clarence M. Weed 「Butterflies Worth Knowing」
...They then feed upon the violetleaves, become mature, and change to chrysalids in time forthe butterflies to emerge in June in New Hampshire...
Clarence M. Weed 「Butterflies Worth Knowing」
...Eggs are laid by these for a second brood ofcaterpillars that feed upon the host plants in the same wayas the others, and mature as butterflies late in August orearly in September...
Clarence M. Weed 「Butterflies Worth Knowing」
...These butterflieslay eggs for a second brood of larvae that mature intochrysalids during September, and hibernate in this conditionuntil the following spring...
Clarence M. Weed 「Butterflies Worth Knowing」
...In New England and the Northern states the short lifeof the larva enables this insect to mature three broodseach season...
Clarence M. Weed 「Butterflies Worth Knowing」
...These birds mate only in pairs as a ruleand the females do not mature and lay until theyare three years old...
Harry M. Lamon 「Ducks and Geese」
...() The eggs hang on the inneredge of the partitions; when mature they drop into the main cavity, enterthe inner digestive cavity through its lower opening, and are passed outthrough the mouth...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...The embryo bears no resemblance to the mature animal...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...For such, especially,as are fattening, and which it is desirable to mature with thegreatest rapidity, a careful indulgence of their appetite shouldbe studied...
Richard L. Allen 「Domestic Animals」
...Tegetmeier has informed me of a curious and inexplicable case of correlation, namely, that young pigeons of all breeds, which when mature become white, yellow, silver (i...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
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