“Now, I propose to lay down my calculations at something less than one-half. In the first place, I say four litters in the year, beginning and ending with a litter, so making thirteen litters in three years; secondly to have eight young ones at a birth, half male and half female; thirdly, the young ones to have a litter at six months old.
“At this calculation, I will take one pair of rats; and at the expiration of three years what do you suppose will be the amount of living rats? Why no less a number than 646,808.
“Mr. Shaw’s little dog ‘Tiny,’ under six pounds weight, has destroyed 2525 pairs of rats, which, had they been permitted to live, would, at the same calculation and in the same time, have produced 1,633,190,200 living rats!
“And the rats destroyed by Messrs. Shaw and Sabin in one year, amounting to 17,000 pairs, would, had they been permitted to live, have produced, at the above calculation and in the same time, no less a number than 10,995,736,000 living rats!
“Now, let us calculate the amount of human food that these rats would destroy. In the first place, my informants tell me that six rats will consume day by day as much food as a man; secondly, that the thing has been tested, and that the estimate given was, that eight rats would consume more than an ordinary man.
“Now, I—to place the thing beyond the smallest shadow of a doubt—will set down ten rats to eat as much as a man, not a child; nor will I say anything about what rats waste. And what shall we find to be the alarming result? Why, that the first pair of rats, with their three years’ progeny, would consume in the night more food than 64,680 men the year round, and leaving eight rats to spare!”
The author then puts forth the following curious statement:—
“And now for the vermin destroyed by Messrs. Shaw and Sabin—34,000 yearly! Taken at the same calculation, with their three years’ progeny—can you believe it?—they would consume more food than the whole population of the earth? Yes, if Omnipotence would raise up 29,573,600 more people, these rats would consume as much food as them all! You may wonder, but I will prove it to you:—The population of the earth, including men, women, and children, is estimated to be 970,000,000 souls; and the 17,000 rats in three years would produce 10,995,736,000: consequently, at ten rats per man, there would be sufficient rats to eat as much food as all the people on the earth, and leaving 1,295,736,000. So that if the human family were increased to 1,099,573,600, instead of 970,000,000, there would be rats enough to eat the food of them all! Now, sirs, is not this a most appalling thing, to think that there are at the present time in the British Empire thousands—nay, millions—of human beings in a state of utter starvation, while rats are consuming that which would place them and their families in a state of affluence and comfort? I ask this simple question: Has not Parliament, ere now, been summoned upon matters of far less importance to the empire? I think it has.”
The author then advocates the repeal of the “rat-tax,” that is, the tax on what he calls the “true friend of man and remorseless destroyer of rats,” the well-bred terrier dog. “Take the tax off rat-killing dogs” he says, “and give a legality to rat-killing, and let there be in each parish a man who will pay a reward per head for dead rats, which are valuable for manure (as was done in the case of wolves in the old days), and then rats would be extinguished for ever!” Uncle James seems to be a perfect Malthus among rats. The over-population and over-rat theories are about equal in reason.