The bottle, closed, or blind gentian loves the damp fields and somewhat open road-sides. It resembles a cluster of bright blue buds about to open, but they never do. Neltje Blanchan says that bumblebees have hard work to rob it of its nectar and pollen. Climbing clumsily over the corolla, it finds the space between the lips and forces its head and trunk through the opening. Presently it backs out, and, with its feet and velvety body covered with pollen, flies away to fertilize some other gentian. Notes September Seventh Muskrats, like children, make "collections." A muskrat's "playhouse" is usually placed on a partly submerged stump, log, boulder, or the float of a boat-house. In some such place is piled all sorts of rubbish,--sticks, stones, bones, iron, glass, clam shells, and what not. Near by one may find a thick mat of aquatic grass, used by the owner as a resting-place. When camped in the vicinity of a playhouse, you will hear the clink of touching stones at night, and the splash of water. September Eighth Damp, shaded flats along streams or spring-holes, are where the jewel-weed, or touch-me-not, clusters. The orange-colored blossoms have gone to seed and hang in tiny pods upon the stems. Touch one, and if it is ripe, it will burst with a suddenness that startles you. September Ninth You must be unfamiliar with the country if you have never felt the sting of the nettle. The rib of the nettle leaf is armed with tiny, hollow spines, each of which is connected with a microscopic sack or bulb filled with poison, called formic acid. When the skin is pierced by the spines, the bulb is pressed, and the poison injected into the wound. Every boy of outdoor life knows that mud will relieve the irritation. Notes September Tenth The true locusts are the field insects commonly called "grasshoppers." They belong to a class of insects whose metamorphosis is not complete,--that is, they do not go through all of the several stages of transformation. The young, on emerging from the ground where the eggs were laid the summer previous, look like abnormal wingless grasshoppers. Grasshoppers live but a single season. September Eleventh The little green heron will steal cautiously along the water's edge, with head drawn in, and beak pointed forward. Then he stops, and with a sudden lunge catches a minnow or a polliwog in his bill, and swallows it head foremost. When flushed, he laboriously wings his way across the stream and, alighting in the shallow water or in a tree, flirts his tail, stretches his long neck, and stands motionless a few minutes before starting on another fishing trip. September Twelfth