A Treatise on Domestic Economy; For the Use of Young Ladies at Home and at School

the sap, but bear only leaves. _Green vitriol_, see _Copperas_. _Griddle_, an iron pan, of a peculiarly broad and shallow construction, used for baking cakes. _Ground-plan_, the map or plan of the lower floor of any building, in which the various apartments, windows, doors, fireplaces, and other things, are represented, like the rivers, towns, mountains, roads, &c., on a map. _Gum Arabic_, a vegetable juice which exudes through the bark of the _Acacia_, _Mimosa nilotica_, and some other similar trees, growing in Arabia, Egypt, Senegal, and Central Africa. It is the purest of all gums. _Hardpan_, the hard, unbroken layer of earth, below the mould or cultivated soil. _Hartshorn_, (spirits of,) a volatile alkali, originally prepared from the horns of the stag or hart, but now procured from various other substances. It is known by the name of ammonia, or spirits of ammonia. _Hemlock_, see _Cicuta_. _Horticulturist_, one skilled in horticulture, or the art of cultivating gardens; horticulture being to the garden, what agriculture is to the farm, the application of labor and science to a limited spot, for convenience, for profit, or for ornament,--though implying a higher state of cultivation, than is common in agriculture. It includes the cultivation of culinary vegetables and of fruits, and forcing or exotic gardening, as far as respects useful products. _Hoskin's gloves_, gloves made by a person named Hoskin, whose manufacture was formerly much celebrated. _Hydrogen_, a very light, inflammable gas, of which water is, in part, composed. It is used to inflate balloons. _Hypochondriasis_, melancholy, dejection, a disorder of the imagination, in which the person supposes he is afflicted with various diseases. _Hysteria_, or _hysterics_, a spasmodic, convulsive affection of the nerves, to which women are subject. It is somewhat similar to hypochondriasis in men. _Ingrain_, a kind of carpeting, in which the threads are dyed in the grain, or raw material, before manufacture. _Ipecac_, (an abbreviation of _ipecacuanha_,) an Indian medicinal plant, acting as an emetic. _Isinglass_, a fine kind of gelatin, or glue, prepared from the swimming-bladders of fishes, used as a cement, and also as an ingredient in food