"Gentlemen," said Mrs. Greene, "tell this to my young friend, Mr. Whitney. Verily, I believe he can make anything." As a result of this conversation, in two or three months Eli Whitney had invented the cotton-gin (1793), although in so doing he had to make all his own tools. The cotton-gin brought about great changes. Before its invention it took a slave a whole day to separate the seed from five or six pounds of cotton fibre. But by the use of the cotton-gin he could separate the seed from a thousand pounds in a single day. [Illustration: Whitney's Cotton-Gin.] This, of course, meant that cotton could be sold for very much less than before, and hence there arose a much greater demand for it. It meant, also, that the labor of slaves was of more value than before, and hence there was a greater demand for slaves. As slavery now became such an important feature of southern life, let us pause for a glimpse of a southern plantation where slaves are at work. If we are to see such life in its pleasantest aspects, we may well go back to Virginia in the old days before the Civil War. There the slaves led a freer and easier life than they did farther south among the rice-fields of South Carolina or the cotton-fields of Georgia. If we could visit one of these old Virginia plantations as it used to be, where wheat and tobacco were grown, we should see first a family mansion, often situated on a hilltop amid a grove of oaks. The mansion is a two-story house, perhaps made of wood, and painted white. With its vine-clad porch in front, and its wide hallway inside, it has a very comfortable look. Not far away is a group of small log cabins. This cluster of simple dwellings, known as "the quarters," is the home of the slaves, who do the work in the house and fields. On the large plantations of the far south, there were sometimes several slave settlements on one plantation, each being a little village, with the cabins set in rows on each side of a wide street. Each cabin housed two families; belonging to each was a small garden. The log cabins contained large fireplaces, and it was not unusual for the master's children to gather about them when the weather was cold enough for fires, to hear the negroes tell quaint tales and sing weird songs. The old colored "mammies" were very fond of "Massa's chillun" and liked to pet them and tell them stories. Sometimes the cooking for the master's family was done in the kitchen of the "big house," but more often in a cabin outside, from which a negro waitress carried the food to the dining-room. The slaves had regular allowances of food, most of which they preferred to cook in their own cabins. Their common food was corn bread and ham or bacon.