Loosh produced was of such low grade that it was scarcely worth the effort. In addition, the growth period was now too long and no increase in quality resulted. Some vital element was missing. Someone hovered over his Garden for a long period in study before he attempted the Third Crop. It was indeed a challenge. True, he was partially successful. He had grown Loosh. Yet the product of his efforts fell far short of the wild, uncultivated variety. It was inevitable that he perceived the answer. The Third Crop was living proof of this Truth. The original carbon-oxygen cycle must be included. Mobility must be restored. Both factors had shown great promise in high-grade Loosh production. If size could be added to this, much could be accomplished. With this plan in the forefront, Someone removed various sample units from the First Crop, which was still thriving in the liquid portion of the Garden. He modified them to exist and grow in the gaseous area. He adapted them first to take nourishment from the Second Crop, which he permitted to abound for this very purpose. Thus it was that the first of the Mobiles, the Third Crop, came into being. The Mobiles took nourishment from the Second Crop, thus ending its life span and producing low-grade Loosh. When each huge Mobile terminated its own life span, additional Loosh was produced. The quantity was massive, but the frequency pattern of the Loosh residue still left much to be desired. It was by accident that Someone came upon the Prime Catalyst as regards Loosh production. The monstrous and slow-moving Mobiles had a life span far out of proportion to their nourishment input. The growth and life-termination process was of such length that soon the Mobiles would all but decimate the Second Crop. The entire Garden would be out of balance, and there would be no Loosh production whatsoever. Both the Second and Third Crop faced extinction. As the Second Crop grew scarce, energy needs of the Mobiles became acute. Often two Mobiles would seek to ingest the identical Second Crop unit. This created Conflict, which resulted in physical struggle among two or more of the ungainly Mobiles. Someone observed these struggles, at first bemused with the