Again: “If we grant that a scientific treatment of crops would enable food supplies to keep pace with population, and for this purpose supposing that all the land in the planet Jupiter were available for a market garden, it would not ultimately be want of food but want of room that would put a stop to the increase of the multitude.” But further, the above author—a mathematician—examines what the potentiality of increase represents on the supposition that each individual merely died the natural death of old age. “Under such favourable conditions as the absence of war, famine and disease, the race might treble its numbers in thirty years. To show the significance of the numerical law, let us imagine it to operate undisturbed 3,000 years upon the progeny of a single pair. The number of human beings finally existing would be expressed by twice the 100th power of 3. An easy computation will show that if these people were packed together, allowing six cubic feet of space for each person, they would fill up the whole solar system in every direction, and extend beyond it to a distance 430 times that of the planet Neptune. In fact, a solid sphere of human beings would be formed having a diameter of 2,400,000,000,000 miles. Such considerations lead us to realize the absolute inevitableness of Nature’s checks upon reproduction.” (_Social Evolution and the Evolution of Socialism_, by George Shoobridge Carr, M.A., Cantab.) Turning now from scientific speculation to recognized authority in practical politics, let me quote from a paper read at the Registrar-General’s office on March 18, 1890, by Dr. William Ogle, Superintendent of Statistics: “The population of England and Wales is, as we all know, growing in a most formidable manner, and though persons may differ in their estimates of the time when that growth will have reached its permissible limits, no one can doubt that, if the present rate of increase be maintained, the date of that event cannot possibly be very remote.”