Conditions of Existence As Affecting the Perpetuation of Living Beings
Conditions of Existence As Affecting the Perpetuation of Living Beings
Th Huxley
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I willsuppose that every plant requires one square foot of ground to liveupon; and the result will be that, in the course of nine years, theplant will have occupied every single available spot in the wholeglobe! I have chalked upon the blackboard the figures by which Iarrive at the result:- Plants. Plants 1 x 50 in 1st year = 50 50 x 50 " 2nd " = 2, 500 2, 500 x 50 " 3rd " = 125, 000 125, 000 x 50 " 4th " = 6, 250, 000 6, 250, 000 x 50 " 5th " = 312, 500, 000 312, 500, 000 x 50 " 6th " = 15, 62...5, 000, 000 15, 625, 000, 000 x 50 " 7th " = 781, 250, 000, 000 781, 250, 000, 000 x 50 " 8th " = 39, 062, 500, 000, 00039, 062, 500, 000, 000 x 50& " 9th " = 1, 953, 125, 000, 000, 000 51, 000, 000 sq. Miles--the dry surface of the earth x 27, 878, 400--thenumber of sq. Ft. In 1 sq. Mile = sq. Ft. 1, 421, 798, 400, 000, 000 being531, 326, 600, 000, 000 square feet less than would be required at the endof the ninth year. You will see from this that, at the end of the first year the singleplant will have produced fifty more of its kind; by the end of thesecond year these will have increased to 2, 500; and so on, insucceeding years, you get beyond even trillions; and I am not at allsure that I could tell you what the proper arithmetical denomination ofthe total number really is; but, at any rate, you will understand themeaning of all those noughts.
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