John Wilkins was trying to make horse-drawn vehicles more efficient; to test them, he had rigged up a weight on a rope, above a well, so that when the weight fell down into the well, it would drag his chariots across the ground. Their progress could then be timed using one of Hooke's watches. That duty fell to Charles Comstock, who spent many days standing out in the field making trials or fixing broken wheels. His father's servants needed the well to draw water for livestock, and so Charles was frequently called out to move the contraption out of the way. Daniel enjoyed watching all of this, out the window, while he worked on Punishments: