Similar to the whip-poor-will in shape, the nighthawk, or bullbat, differs from it in song and habits,--though, oddly enough, it perches lengthwise on a limb as the whip-poor-will does. _It is neither a hawk nor a bat_, for it is classed close to the chimney swift, and like the swift, it is of inestimable value as an insect destroyer. It is often seen in the daytime and the large white spot on the under side of each wing helps to identify it. July Fifth The horned-tails are the large wasp-like insects that we see about the elm, oak, and maple trees. They bore holes a quarter of an inch in diameter in the tree trunk, and in these holes the eggs are laid. Sometimes they get their augers wedged and are unable to free themselves. The horned-tails are destructive, and should be killed whenever found. They sometimes remain in the pupa state so long, that the tree may be cut down and the wood made into furniture before they finally emerge. July Sixth Before now you have probably seen the ruby-throated hummingbird poising over the flowers in your garden. Sometimes he goes through strange antics. Mounting ten or fifteen feet into the air, he swoops down in a graceful curve, then turns and repeats the performance time and time again. Notes July Seventh In travelling from burrow to burrow, woodchucks often make roads a quarter of a mile long through the grass. Occasionally you will get a long distance view of the "'chuck" as he scuds to the mouth of his hole, and rising on his hind legs, stands erect and watches you, then bobs out of sight. He is the most alert and keen-eyed of all American rodents, and his presence in such numbers, despite the war waged upon him, proves his ability to take care of himself. July Eighth "The interrupted fern is less a lover of moisture than its kindred. The fertile fronds are usually taller than the sterile leaves, and they remain green all summer. The spore-bearing organs are produced near the middle of the frond" (Clute), thus "interrupting" the pinnæ growth of the leaf. It is also called Clayton's fern. July Ninth The hind feet of a honey bee are provided with stiff fringes. With these the bee scrapes from the rings of its body the oily substance that is exuded, and passes it to the mouth. After chewing and working it between the mandibles (for the bee has mouth-parts for biting, and a proboscis for sucking the juices and honey from plants), it becomes soft and is then built into comb. [Illustration: Photograph by Silas Lottridge. WOODCHUCK.] Notes July Tenth