... have taken some pains to estimate its probable minimum rate of natural increase ; it will be safest to assume that it begins breeding when thirty years old and goes on breeding till ninety years old, bringing forth six young in the interval and surviving... Proceedings of the Canadian Institute - Page 37by Canadian Institute - 1889Full view - About this book
| James Samuelson, Henry Lawson, William Sweetland Dallas - 1876 - 508 pages
...years old, bringing forth six young in the interval, and surviving till 100 years old. If this be so, after a period of from 740 to 750 years, there would be nearly nineteen million elephants alive descended from, the first pair." But if we leave these grand... | |
| Charles Darwin - 1873 - 492 pages
...brlllglljg forth six young in the interval, and"survivlng till one hundred years oTTT if this be so, after a period of from 740 to 750 years there would be nearly nineteen million elephants "alive, descended Irom the first pair. but~we"~nave better evidence... | |
| Charles Darwin - 1875 - 504 pages
...bringing forth six young in the interval, and surviving till one hundred years old ; if this be so, after a period of from 740 to 750 years there would be nearly nineteen million elephants alive, descended from the first pair. But we have better evidence... | |
| 1881 - 340 pages
...bringing forth six young in the interval, and surviving till one hundred years old ; if this be so, after a period of from 740 to 750 years, there would be nearly nineteen million elephants alive, descended from the first pair." This short extract will be... | |
| Canadian Institute (1849-1914). - 1888 - 224 pages
...subsistence." Each of these versions of the doctrine is substantially correct and is axiomatically true, and Mr. George himself admits that the doctrine...single pair will have, without twins, as many as thirty child ren. This is no phenomenal occurrence amongst the French people in Quebec, and families of over... | |
| Charles Clement Coe - 1895 - 638 pages
...bringing forth six young in the interval, and surviving till one hundred years old. If this be so, after a period of from 740 to 750 years, there would be nearly nineteen million elephants alive descended from the first pair." — (Origin of Species. p.... | |
| Frederick Webb Headley - 1895 - 446 pages
...ninety, its term of life being estimated at one hundred years. Yet with these data he calculates that " after a period of from 740 to 750 years there would be nearly 19,000,000 elephants alive, descended from the first pair." This marvellously rapid increase... | |
| Charles Darwin - 1896 - 408 pages
...bringing forth six young in the interval, and surviving till one hundred years old ; if this be so, after a period of from 740 to 750 years there would be nearly nineteen million elephants alive, descended from the first pair. But we have better evidence... | |
| Charles Darwin - 1896 - 406 pages
...bringing forth six young in the interval, and surviving till one hundred years old ; if this be so, after a period of from 740 to 750 years there would be nearly nineteen million elephants alive, descended from the first pair. But we have better evidence... | |
| Charles Dudley Warner - 1897 - 492 pages
...bringing forth six young in the interval, and surviving till one hundred years old: if this be so, after a period of from 740 to 750 years there would be nearly nineteen million elephants alive, descended from the first pair. But we have better evidence... | |
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