But let us, instead of putting cases of our own, look at some of those which Mr Sadler has brought forward in support of his theory. The following table, he tells us, exhibits a striking proof of the truth of his main position. It seems to us to prove only that Mr Sadler does not know what inverse proportion means. Countries Inhabitants on a Children to a Square Mile, about Marriage Cape of Good Hope 1 5.48 North America 4 5.22 Russia in Europe 23 4.94 Denmark 73 4.89 Prussia 100 4.70 France 140 4.22 England 160 3.66 Is 1 to 160 as 3.66 to 5.48? If Mr Sadler's principle were just, the number of children produced by a marriage at the Cape would be, not 5.48, but very near 600. Or take America and France. Is 4 to 140 as 4.22 to 5.22? The number of births to a marriage in North America ought, according to this proportion, to be about 150. Mr Sadler states the law of population in England thus:-- "Where the inhabitants are found to be on the square mile, From To Counties Number of births to 100 marriages 50 100 2 420 100 150 9 396 150 200 16 390 200 250 4 388 250 300 5 378 300 350 3 353 500 600 2 331 4000 and upwards 1 246 "Now, I think it quite reasonable to conclude, that, were there not another document in existence relative to this subject, the facts thus deduced from the census of England are fully sufficient to demonstrate the position, that the fecundity of human beings varies inversely as their numbers. How, I ask, can it be evaded?"