The Humming birds, with their varied beauties, constitute the most remarkable feature of the bird-life of America. They have absolutely no representatives in any other part of the world, the Swifts being the nearest relatives they have in other countries. Mr. Forbes says that they abound most in mountainous countries, where the surface and productions of the soil are most diversified within small areas. They frequent both open and rare and inaccessible places, and are often found on the snowy peaks of Chimborazo as high as 16,000 feet, and in the very lowest valleys in the primeval forests of Brazil, the vast palm-covered districts of the deltas of the Amazon and Orinoco, the fertile flats and savannahs of Demarara, the luxurious and beautiful region of Xalapa, (the realm of perpetual sunshine), and other parts of Mexico. Many of the highest cones of extinct and existing volcanoes have also furnished great numbers of rare species. These birds are found as small as a bumble bee and as large as a Sparrow. The smallest is from Jamaica, the largest from Patagonia. Allen's Hummer is found on the Pacific coast, north to British Columbia, east to southern Arizona. Mr. Langille, in "Our Birds in their Haunts," beautifully describes their flights and manner of feeding. He says "There are many birds the flight of which is so rapid that the strokes of their wings cannot be counted, but here is a species with such nerve of wing that its wing strokes cannot be seen. 'A hazy semi-circle of indistinctness on each side of the bird is all that is perceptible.' Poised in the air, his body nearly perpendicular, he seems to hang in front of the flowers which he probes so hurriedly, one after the other, with his long, slender bill. That long, tubular, fork-shaped tongue may be sucking up the nectar from those rather small cylindrical blossoms, or it may be capturing tiny insects housed away there. Much more like a large sphynx moth hovering and humming over the flowers in the dusky twilight, than like a bird, appears this delicate, fairy-like beauty. How the bright green of the body gleams and glistens in the sunlight. Each imperceptible stroke of those tiny wings conforms to the mechanical laws of flight in all their subtle complications with an ease and gracefulness that seems spiritual. Who can fail to note that fine adjustment of the organs of flight to aerial elasticity and gravitation, by which that astonishing bit of nervous energy can rise and fall almost on the perpendicular, dart from side to side, as if by magic, or, assuming the horizontal position, pass out of sight like a shooting star? Is it not impossible to conceive of all this being done by that rational calculation which enables the rower to row, or the sailor to sail his boat?" "What heavenly tints in mingling radiance fly, Each rapid movement gives a different dye; Like scales of burnished gold they dazzling show, Now sink to shade, now like a furnace glow."