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A FRAME FOR A PLAQUE.
A fine frame for any kind of plaque, whether repoussé, porcelain, leather work, or papier-maché, can be easily made from a square piece of wood, about six inches wider than the subject to be framed; this can be beveled at the edges, or left as when sawed. In the center, with a strong pair of carpenter’s dividers describe a circle, whose diameter shall be half an inch shorter than that of the plaque. Bevel the front edge of this opening, then covering the whole front surface of this wood with thin glue, lay it, face downward upon the piece of plush or velvet, intended to cover it; the material lying flat and smooth, with its raised surface downward, upon an uncovered table. Cut the center of the cloth away, allowing enough on the edge to draw over the opening of the frame; slash this to within a short distance of the wood, that it may lay evenly when finished; now glue this firmly down upon the back, and bring over the outside edges and fix them in the same way. When this is dry, fasten in your plaque with brads driven into the back of the frame, and extending over the edge of the opening at its back. Finally, when certain all is securely fastened, wet a piece of brown paper, cut to exactly cover the entire back of plaque and frame both, cover it with paste and press it in place. It is necessary to wet the paper first, to prevent its wrinkling or forming great bubbles when dry. When the paper is dampened, a bit of paste around the edge is all that is necessary to hold it in place.
After this backing is completed, a couple of screw-eyes and a wire cord are to be added, and your plaque is ready for your walls.
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THE AQUARIUM.
The name aquarium was formerly sometimes given to a tank or cistern placed in a hot-house, and intended for the cultivation of aquatic plants; but in later years its signification has widened, so that it now embraces animals as well as plants in its category. Its use seems to have been known nearly a hundred years ago, and a number of gentlemen, in the latter part of the eighteenth century, made several successful experiments by means of this “scientific plaything,” as some writer has happily called it. The aquarium can be used for either salt or fresh water animals, the former necessitating a residence conveniently near the sea, for the purpose of occasionally replenishing it with a fresh supply of the water. It may be an ordinary globe, or it can be made of slabs of heavy glass, fastened inside an iron frame-work, with a peculiar kind of cement, made specially for the purpose. They can be obtained in different sizes at several places in New York and other cities, and as the materials in themselves are expensive, and the work of making one usually results in a series of disappointments, and finally, in total failure, the expediency of buying one ready-made cannot be too strongly urged upon the young naturalist. Although the large aquarium accommodates more inmates, the globe is much more easily cleaned, and answers equally well for a few fishes, as the one in my window will testify. As fresh-water animals and plants are more accessible to the larger proportion of boys in the country, and the globe much cheaper, while it occupies less space than the large square articles alluded to above, it may possibly not come amiss for me to give, for the benefit of those of my readers who are interested in the subject, a description of my own fresh-water aquarium, and what little experience I have derived from it.
It is a globe of ordinary shape, and has the capacity of a common water-pail. For several years it was stocked with gold-fish, but it was, moreover, a source of ceaseless anxiety and trouble. The fish would die or turn black without any apparent cause, and, still worse, would frequently have what we termed “fits” in the night, and jump out of the globe on the floor, where they would be found, cold and lifeless, in the morning.
The experiment of keeping these decidedly troublesome pets was finally given up, and the empty globe placed high and dry upon a closet shelf.