Hymen, in Greek mythology, the god of marriage. According to some, he was a son of Apollo and one of the muses; but according to others, he was originally a mortal, who, having rescued some Attic maidens from Pe-lasgic pirates or other robbers, had his praises celebrated in token of gratitude in their bridal songs, which after him were called hymeneal songs. The practice of singing such songs at the nuptial season became in time universal, and the heroic youth was gradually elevated to the rank of a divinity. Hymen is represented in works of art as a tall handsome youth, carrying in his right hand a bridal torch.
Hymenoptera (Gr. membrane, and wing), a suborder of insects, so named from their four membranous, transparent wings. They have upper horny jaws for biting, and softer and longer lower jaws with the tip adapted for collecting honey; the females and neuters have a sting or piercer. All undergo complete metamorphosis; the larvae of the stingers are soft, without legs, resembling maggots; most of the larval piercers resemble grubs and caterpillars. They are diurnal, swift fliers, and surpass all other insects in the number and variety of their instincts; of the very numerous species none are aquatic. They include the bees, wasps, ants, ichneumons, gall flies, saw flies, etc, which are described under their respective titles.
Hymettus, a mountain range of Attica, forming the S. E. boundary of the Athenian plain. It consists of two summits, the northern or greater Hymettus, the apex of which is about 3,500 ft. above the sea, and the southern or lesser Hymettus, denominated Anhydrus, "the waterless," by the ancients. The honey of Hymettus was considered by the ancient Greeks as inferior only to that of Hybla in Sicily; but at present, though still abundant, it is said to be of very poor quality. The excellence of its marble is a favorite theme with classic authors. The greater Hymettus is now called Trelo-Vuno, and the lesser Mavro-Vuno.
Hyperbola (Gr. to transcend), one of the conic sections, produced when the cutting plane makes a smaller angle with the axis of a right cone than is made by the side. The shadow of a globe on a flat wall, when part of the globe is further than the luminous point is from the wall, gives a hyperbola. Hy-perboloids are surfaces generated by moving hyperbolas.
The Salts Formed By Hypophosphorous Acid With Lime Hypophosphites, soda, potash, and ammonia were proposed, mainly on theoretical grounds, as remedies for phthisis, by Dr. Churchill of Paris. They have been extensively used, and are so still to a much less degree. Although possibly useful as tonics in some cases, they are as far as all other drugs from being specifics for consumption. Their chief therapeutic value is to be found in cases where the phosphates of the system are morbidly deficient. This occasionally occurs in the debility that sometimes follows prolonged lactation, in some forms of dyspepsia and anaemia, and now and then in the disturbance or fever of dentition. The hypophosphites of soda and lime are the most useful agents, medicinally, of this class. They are best given in combination with a bitter or aromatic tincture or infusion. The dose of each of them is from 2 to 12 grains, according to age and other circumstances.