CHAPTER XI.
Mars and Malthus.
MY recital aroused the elderly lady, and evidently called to mind some familiar chains of thought, Said she:—
'Are you aware that your discovery has once more answered an old chain of fallacious reasoning?'
'No, I know nothing of any reasoning that I have answered.'
'Then I will tell you of something fresh to your mind. I am Edith Somers. Some people call me Dr. Somers, and I have written a little on Social Science, I have said that our world is not yet fully populated; that discoveries may any day be made that will double our resources. Such a discovery you have made. By its use the snow line, north and south, will be driven back, and millions of acres of useless land made available for tillage and the residence of happy men and women. And by its use this very land upon which we are looking will probably have its productiveness doubled.'
'You are much more sanguine than I am regarding the ultimate effects of my experiments. It is nevertheless my intention to try the snow lines. Good may be done there. As for tropical plains such as this I do not think their productiveness can be much increased. And further, we have yet to see whether or not land will be impoverished by being made to produce more rapidly and freely. We have already come to the conclusion that chemical elements have to be supplied in greater quantities, though so far our experiments have left us in a little doubt. Certainly I do not expect to be responsible for any vast increase in our population.'
'Still my idea is that you have done more for us than Weston did when he drained our Great Swamp and gave to the world this fair land. You have provided an answer for the Croakers, and I have great hopes for the future, of your discovery, especially seeing you so young and full of life, and evidently bent on making the most of a great thing.'
'Who are the Croakers you speak of?'
'They are writers who from time immemorial, from the very depths of almost prehistoric period's, have complained of the population being too numerous. They have always found that population increased more rapidly than the means of subsistence, and have threatened us with universal famine in a few years, or at most, a few generations.'
'Yes, my son. What Dr. Somers tells you is quite true, and it may astonish you to learn that what is true of Mars is equally true of the earth. It, according to the disciples of a well-meaning man named Malthus, is in danger of over-population.'
'But that cannot be, the earth is a large planet and very young. It is
