CHAPTER VII.--THE BAROMETER. Our little friends have their first lesson concerning one of the three great envelopes of the earth-the atmosphere. The knowledge that air has weight does not often come by unaided intuition. The initial experiments may be made very interesting and profitable. The United States Weather Reports are an excellent means for the home study of geography. CHAPTER VIII.--A WALK IN THE WOODS. "There is pleasure in the pathless woods" and "The groves were God's first temples" are lines which appeal strongly to those who have spent hours in the shadows and flickering sunlight of the forest. Trees well arranged make many farmhouses beautiful. Trees by the roadside add much beauty to the landscape and afford places of rest to the traveler. Forests mean moisture to the soil. Their leaves and roots make the best reservoirs for water, to be given out when needed by the growing crops. The forests are full of lessons for the children and the experienced scientist. CHAPTER IX.--THE BIRDS AND THE FLOWERS. The knowledge of a farm child is quite extensive, and generally neither the child nor the parent has any suspicion that such knowledge is of any appreciable value in education. It is clearly within the bounds of possibility for every farm boy and girl to know every bird that lives on the farm in summer or winter, and those who rest there in their migrating flight; to know also the names, the plumage, the habits of all the birds; and to know the nests and nesting places of those who make the farm their summer home. All this study cultivates the child's sense of the beautiful. There is no better color study in the world than that which springs from discriminating love of flowers and of the plumage of birds. Such study creates a kindly feeling toward both animals and plants on the part of the child. It exercises a strong moral power over him. CHAPTER X.--THE THUNDERSHOWER. A thundershower is always a phenomenon of interest and often of fear on the part of children. The clouds of the cumulus form, the rolling of thunder, the lightning flashes, the rushing wind, and the pouring rain are full of important lessons. Fear vanishes as knowledge comes. In the thundershower is the question of the distribution of moisture over the earth's surface, the question of the nature and use of clouds, the movement of the air and wind, the condensation of vapor, and the marvelous powers of electricity. CHAPTER XI.--THE VILLAGE. Geography should ever be in the closest touch with the human side. Nature does a marvelous work, but Nature without society is like a vast storehouse of treasure without a demand for its use. The one weak point in farm life is the lack of opportunity for contact with society. CHAPTER XII.--A DAY ON THE RIVER.