Autumn rain made the field turn mucky, and ended the chariot experiments. Charles Comstock had to find other things to do. He had matriculated at Cambridge this year, but Cambridge was closed for the duration of the Plague. Daniel reckoned that as a quid pro quo for staying here at Epsom, Wilkins was obliged to tutor Charles in Natural Philosophy. But most of the tutoring was indistinguishable from drudge work on Wilkins's diverse experiments, many of which (now that the weather had turned) were being conducted in the cottage's cellar. Wilkins was starving a toad in a jar to see if new toads would grow out of it. There was a carp living out of water, being fed on moistened bread; Charles's job was to wet its gills several times a day. The King's ant question had gotten Wilkins going on an experiment he'd wanted to try for a long time: before long, down in the cellar, between the starving toad and the carp, they had a maggot the size of a man's thigh, which had to be fed rotten meat, and weighed once a day. This began to smell and so they moved it outside, to a shack downwind, where Wilkins had also embarked on a whole range of experiments concerning the generation of flies and worms out of decomposing meat, cheese, and other substances. Everyone knew, or thought they knew, that this happened spontaneously. But Hooke with his microscope had found tiny motes on the undersides of certain leaves, which grew up into insects, and in water he had found tiny eggs that grew up into gnats, and this had given him the idea that perhaps all things that were believed to be bred from putrefaction might have like origins: that the air and the water were filled with an invisible dust of tiny eggs and seeds that, in order to germinate, need only be planted in something moist and rotten.