When disturbed, it does not rise into the air, but flies downward and disappears with a swish of its tail. The nest is usually built on the ground or in a low bush or tree. It is composed of grass, fine roots, or weed stems, and lined with fine grass or hair. The eggs are usually four or five, but sometimes there are as many as seven. They are white with a greenish-blue tint and are closely spotted with brown. CLASS-ROOM LESSON Discuss with the pupils the observations that they have made on the field exercises. Generalize as to the similarity of the places in which the pupils have seen the sparrow singing, and as to the times of day in which the bird sings. Teach the marks of identification which some have discovered, using for this purpose pictures of the bird or black-board drawings; and encourage those who have not yet seen the song-sparrow to try again and to secure the assistance of those who have succeeded. Compare the size and form of the song-sparrow with that of the house-sparrow (English). Tell the pupils the great value of the bird in killing cutworms, plant-lice, caterpillars, ground-beetles, grasshoppers, flies, and other insects. It also helps to prevent the spread of weeds by eating thousands of seeds of noxious weeds. Assign the pupils some other things to discover, as for example: Through how many months of the summer does the bird sing? Find the nest. Why is it hard to find? Describe the eggs, as to size, colour, and number. Do not disturb the nest and do not visit it very often. _To the teacher._--Base lessons in bird study upon the English sparrow, flicker, wren, and meadow-lark. THE SHEEP PROBLEMS FOR FIELD WORK How do sheep find one another when they have become separated? How old are the lambs before they can keep up with the old sheep when running? What fits the lamb for running so well? Watch the lambs when they are playing, and find out whether they play: 1. I'm the king of the castle. 2. Follow the leader. Find out by watching a flock of sheep what is meant by "Men follow one another like a flock of sheep". Describe how sheep move when they are going very fast. Why should sheep be kept in a well-ventilated building that protects them from snow and rain but is not very warm? _To the teacher._--Each movement, habit, and instinct implied in this exercise is explained by the life of the wild sheep. Their natural home is in the mountain, and their swift movement is that of bounding from rock to rock as they follow the strongest and boldest (their leader) to a place of safety. The legs of the lamb grow rapidly, beyond all proportion to the rate of growth of the body, so that within two weeks after birth the young lamb is almost as strong of limb and fleet of foot as its mother. In their games the lambs are fitting themselves for their place in the flock, and these games very much resemble those named in the exercise. CHAPTER VI FORM II AUTUMN BULB PLANTING OUT-OF-DOORS