When Lady Mary returned to the schoolroom, her governess read to her some interesting accounts of the habits of the humming-bird.

"'This lively little feathered gem—for in its hues it unites the brightness of the emerald, the richness of the ruby, and the lustre of the topaz—includes in its wide range more than one hundred species. It is the smallest, and at the same time the most brilliant, of all the American birds. Its head-quarters may be said to be among the glowing flowers and luxurious fruits of the torrid zone and the tropics. But one species, the ruby-throated, is widely diffused, and is a summer visitor all over North America, even within the Arctic Circle, where, for a brief space of time, it revels in the ardent heat of the short-lived summer of the North. Like the cuckoo, she follows the summer wherever she flies.

"'The ruby-throated humming-bird [Footnote: Trochilus rubus.] is the only species that is known in Canada. With us it builds and breeds, and then returns to summer skies and warmer airs. The length of the humming-bird is only three inches and a half, and four and a quarter in extent, from one tip of the wing to the other. When on the wing, the bird has the form of a cross, the wings forming no curve, though the tail is depressed during the time that it is poised in the act of sucking the honey of the flower. The tongue is long and slender; the bill long and straight; the legs are very short, so that the feet are hardly visible when on the wing. They are seldom seen walking, but rest on the slender sprigs when tired. The flight is so rapid that it seems without effort. The humming sound is produced by the wing, in the act of keeping itself balanced while feeding in this position. They resemble the hawk-moth, which also keeps up a constant vibratory motion with its wings. This little creature is of a temper as fierce and fiery as its plumes, often attacking birds of treble its size; but it seems very little disturbed by the near approach of the Truman species, often entering open windows, and hovering around the flowers in the flower-stand; it has even been known to approach the vase on the table, and insert its bill among the flowers, quite fearless of those persons who sat in the room. Sometimes these beautiful creatures have suffered themselves to be captured by the hand.

"'The nest of the ruby-throated hummingbird is usually built on a mossy branch. At first sight, it looks like a tuft of grey lichens; but when closely examined, shows both care and skill in its construction, the outer wall being of fine bluish lichens cemented together, and the interior lined with the silken threads of the milk-weed, the velvety down of the tall mullein, or the brown hair-like filaments of the fern. These, or similar soft materials, form the bed of the tiny young ones. The eggs are white, two in number, and about the size of a pea, but oblong in shape. The parents hatch their eggs in about ten days, and in a week the little ones are able to fly, though the old birds continue to supply them with honey for some time longer. The Mexican Indians give the name of Sunbeam to the humming-bird, either in reference to its bright plumage or its love of sunshine.

"'The young of the humming-bird does not attain its gay plumage till the second year. The male displays the finest colours—the ruby necklace being confined to the old male bird. The green and coppery lustre of the feathers is also finer in the male bird.'"

Lady Mary was much pleased with what she had heard about the humming-bird, and she liked the name of Sunbeam for this lovely creature.

CHAPTER X.

AURORA BOREALIS, OR NORTHERN LIGHTS, MOST FREQUENTLY SEEN IN NORTHERN CLIMATES—CALLED MERRY DANCERS—ROSE TINTS—TINT-LIKE APPEARANCE—LADY MARY FRIGHTENED.

One evening, just as Mrs. Frazer was preparing to undress Lady Mary, Miss Campbell, her governess, came into the nursery, and taking the little girl by the hand, led her to an open balcony, and bade her look out on the sky towards the north, where a low dark arch, surmounted by an irregular border, like a silver fringe, was visible. For some moments Lady Mary stood silently regarding this singular appearance; at length she said, "It is a rainbow, Miss Campbell; but where is the sun that you told me shone into the drops of rain to make the pretty colours?"

"It is not a rainbow, my dear; the sun has been long set."