Watch the wrens returning to the nest; what do they carry to their young? Where do the wrens get the snails and grubs? Observe how the robins find the worms and how they pull them out of the ground. Follow the downy woodpecker to the apple tree and find out what he was pecking. Watch the crow in the pasture field and learn whether this bird kills grasshoppers and crickets. Observe the birds that pick seeds out of the weeds. Collecting birds' eggs should be condemned, because it nearly always leads to the robbing of the nests. The practice of exchanging eggs is the chief cause of this; for although an occasional boy will collect wisely, the greater number are simply anxious to add to their collection without regard for the sacredness of the birds' homes. A collection of birds' nests may be made after the nests have been abandoned for the season, and it will be found useful for interesting the pupils in the ingenuity, neatness, and instinctive foresight of the builders. REFERENCES Chapman and Reed: _Colour Key to North American Birds_ $2.75 Reed: _Bird Guide, Pts. I and II_ .75 Silcox and Stevenson: _Modern Nature Study_ .75 Cornish: _Thirty Lessons in Nature Study on Birds._ Dominion Book Company 1.00 _Canadian Birds in Relation to Agriculture._ This chart has pictures in colours of eighty-eight Canadian birds. G. M. Hendry Co., $3.00. _The Audubon Charts._ These three charts have pictures of fifty-five birds; the pictures are larger in the latter charts than in the first named. G. M. Hendry Co., $2.00 each. _Coloured Bird Pictures_, Mumford, Chicago, (separate coloured pictures) are very suitable for illustrating nature lessons on birds. INSECTS There are three classes of insects that are of immediate interest to the pupils of the Junior Grades, and the teacher who makes direct use of this natural interest has taken possession of the key to success in insect study in the primary classes. The three classes, basing the classification upon their power to attract attention, are: The beautiful insects, including moths, butterflies, and beetles, The wonderful insects, including such insects as ants, ant-lions, caddice-flies, etc., The economic insects, including bees, silk-worms, codling-moths, etc. Economic insects are interesting because of their relations to the occupations of the home. The successful growing of farm, orchard, and garden crops practically depends upon keeping a proper balance of insect and bird life. The teacher who feels that his knowledge of insects is too limited to allow him to undertake the teaching of this branch of Nature Study should cast his misgivings aside; for it is not difficult for the teacher who knows nothing about insects at the outset to become acquainted with such members of the three classes named above as attract the attention of the pupils of the Nature Study classes. The following suggestions in insect study are offered as guides to teacher or pupil: