After learning how to sow seed, George began to inquire into the subject of planting. Many machines have been invented for this purpose which save much labor. The most important are the corn planter and the potato planter. Machines for planting other vegetables are much like these. The hand corn planter, which is used on small farms, is carried in the hand of the farmer. At each place where he wishes a hill of corn he strikes into the ground the planter, which leaves the kernels at the proper depth and covers them with soil. The horse corn planter is a form of grain drill, which does the same work as the hand planter. The potato planter is a simple machine, though it does a variety of work. It cuts the potatoes into slices and drops them through a tube into a furrow which the plow-like part of the planter makes. The slices are dropped at regular spaces and are covered with dirt by the machine itself. In other words, the farmer puts potatoes in the hopper and drives the machine the length of the field. The planter does the rest of the work, saving the farmer the labor of slicing the potatoes, digging the hole, dropping the vegetable and covering it with earth. All this and much more George learned during the next two weeks. Then he showed that he was ready for a new subject by asking his uncle what the farmer did between seedtime and harvest. "I suppose," said the boy, "that most farmers get their planting done almost before summer begins. Then it must be some time before they begin to harvest the grain and dig the potatoes. What do they do all summer?" "I think," replied his uncle, "that you will have to go into the country and see some things for yourself. As the school term is nearly finished, I believe that you must visit a good farmer and spend the summer and autumn with him. Then you will know something of a real farmer's life and work. But to answer your question by asking another, Did you ever hear of weeds?" After that George asked few questions. He began to think that he was showing too much ignorance. From that evening until the end of June he had no thoughts but of the farm. He read but little and waited to study his subject at close hand. But he did discover that a farmer's life is not too easy in the summer. He learned that the ground must be kept free from weeds and continually loosened. He found that the farmer uses his hoe in deadly hostility to the weeds; that he makes his horse do a part of the work of hoeing; that the harrow and the cultivator keep the soil loose between the rows. When the summer came, George felt that he had some knowledge of tillage, of sowing and planting, and of weeding; this was book knowledge. Now he hoped to get into the inside and learn something of the farmer's methods of harvesting. "Then," he thought, "I can be a farmer." CHAPTER IV. IMPLEMENTS FOR HARVESTING.