When I asked her what sort of a crop they were expecting to plant at this season, she replied that this was merely one of the many annual plowings given to all soil to keep it in condition. "We use, of course, abundant fertilizers," she said, "but consider the soil its own best fertilizer if kept moving." "Doubtless," said I, "labor is the best fertilizer of the soil. So old an authority as Aesop taught us that in his fable of 'The Buried Treasure,' but it was a terribly expensive sort of fertilizer in my day when it had to come out of the muscles of men and beasts. One plowing a year was all our farmers could manage, and that nearly broke their backs." "Yes," she said, "I have read of those poor men. Now you see it is different. So long as the tides rise and fall twice a day, let alone the winds and waterfalls, there is no reason why we should not plow every day if it were desirable. I believe it is estimated that about ten times the amount of power is nowadays given to the working of every acre of land that it was possible to apply in former times." We spent some time inspecting the farm. The doctor explained the drainage and pumping systems by which both excess and deficiency of rain are guarded against, and gave me opportunity to examine in detail some of the wonderful tools he had described, which make practically no requisition on the muscle of the worker, only needing a mind behind them. Connected with the farm was one of the systems of great greenhouse establishments upon which the people depend for fresh vegetables in the winter, and this, too, we visited. The wonders of intensive culture which I saw in that great structure would of course astonish none of my readers, but to me the revelation of what could be done with plants when all the conditions of light, heat, moisture, and soil ingredients were absolutely to be commanded, was a never-to-be-forgotten experience. It seemed to me that I had stolen into the very laboratory of the Creator, and found him at the task of fashioning with invisible hands the dust of the earth and the viewless air into forms of life. I had never seen plants actually grow before and had deemed the Indian juggler's trick an imposture. But here I saw them lifting their heads, putting forth their buds, and opening their flowers by movements which the eye could follow. I confess that I fairly listened to hear them whisper. "In my day, greenhouse culture of vegetables out of season had been carried on only to an extent to meet the demands of a small class of very rich. The idea of providing such supplies at moderate prices for the entire community, according to the modern practice, was of course quite undreamed of." When we left the greenhouse the afternoon had worn away and the sun was setting. Rising swiftly to a height where its rays still warmed us, we set out homeward.