The habits of wasps and bees differ widely. Both orders are very intelligent. Wild bees live in hollow trees and make their cells of wax. At first they feed their young on "bee bread," which is made from the pollen of flowers, and afterward on honey. Wasps subsist on the juices of fruits, and insects; but they will eat meat. They make their homes in burrows in the ground, or in wood, or they construct nests of paper or mud. June Twenty-first The Maryland yellow-throat is more like a wren than a warbler, but it belongs to the warbler family. As you pass a thicket or a swamp, he shouts "_This way sir, this way sir, this way sir_;" or "_Witchety, witchety, witchety_;" and you might watch for hours without seeing him. But by placing the back of your hand against your lips, and making a low squeaking noise, you are likely to bring him to the top of a reed or bush. Notes June Twenty-second It is quite easy to tell the difference between butterflies and moths. Remember, first of all, that butterflies are _sunlight_ loving insects, while moths stir about only on cloudy days, or after dark. Butterflies, when at rest, hold their wings together over their backs; moths carry them open and parallel with the body. Again, the antennæ, or "feelers," of butterflies are quite club-like in shape, while the "feelers" of moths inhabiting the United States and Canada resemble tiny feathers. June Twenty-third If you are so fortunate as to have a pair of catbirds nesting in a _small tree_ or a _bush_ near your house, you have learned that the male is an accomplished songster. Have you ever noticed the father bird, when perched where he can overlook the nest, gently quivering his wings as though delighted at the thought of a nest full of little ones? After the eggs have hatched, these periods of delight are more frequent. June Twenty-fourth The bracket fungi that are attached to the trunks of forest and shade trees live to an old age. Some have been found over seventy-five years old. They are the fruit of the fungous growth that is living on and destroying the tissues of the tree. The puff-balls are edible fungi before they have dried. [Illustration: CATBIRD] Notes June Twenty-fifth Some one has rightly called young Baltimore orioles the "cry-babies of the bird world." The approach of their mother with food is the sign for a general outcry, and even during her absence, they whimper softly, like disconsolate children. For the next ten days you may hear them in the shade-trees about our streets, particularly after a rain. June Twenty-sixth The long-billed marsh wren is found in tall, rank vegetation bordering rivers and lakes, and in the marshes at tide water. It nests in colonies in the rushes, and the male will build several other nests near the one his mate occupies. "While singing it is usually seen clinging to the side of some tall swaying reed, with its tail bent forward so far as almost to touch its head." (Chapman.)