Page:The New International Encyclopædia 1st ed. v. 10.djvu/357

HUMERAL VEIL. day, which is worn over the shoulders by the deacon in the mass, when he holds the paten from the offertory to the Pater noster, and by the priest in giving benediction or carrying the Blessed Sacrament in procession.  HU′MERUS (Lat., shoulder). The largest and longest bone of the upper extremity; the bone of the arm proper, extending from the shoulder to the elbow. It is divided anatomically into a shaft and two extremities. The upper extremity is rather the larger, and has a semi-globular head which is partially received into the shallow glenoid cavity of the scapula or shoulder-blade, forming a ball-and-socket joint. Two processes or projections of the shoulder-blade assist the glenoid cavity in completing the cavity or seat of the head of the humerus. There are three ligaments which hold the humerus to the scapula—the capsular, the coraco-humeral, and the glenoid, the relations being somewhat similar to those of the (q.v.). The shaft of the humerus is nearly cylindrical in its upper part, but triangularly prismatic below, becoming flattened and broad at the lower extremity, where are placed the two condyles, with their articular surfaces, and the trochlea between them, which form, with the two bones of the forearm, the elbow-joint. (See ; .) The broad, flat lower extremity has two depressions on the anterior aspect of the bone; one slight one on the outer side called the radial depression, which is for the reception of the anterior border of the head of the radius, when the arm is strongly flexed; the other, called the coronoid depression, for the reception of the coronoid process of the ulna during flexion of the arm. Opposite the latter depression, on the posterior surface of the bone, is a deep triangular depression, called the olecranon fossa, for the reception of the olecranon process of the ulna when the forearm is extended. The humerus forms with the scapula, as above mentioned, a ball-and-socket joint, the (q.v.). The elbow-joint is a hinge joint, and, to a certain extent, in its relation to the head of the radius, a ball-and-socket joint.  HUMFREY, HUMPHREY, or HUMPHRYS, (1647-74). A famous English musician, and one of the founders of modern English music. He was born in London. He was one of the children of the Chapel Royal, and while yet a boy composed considerable Church music, and in a book of Divine Services and Anthems, published by Clifford in 1664, there are five anthems ascribed to him. Upon the breaking of his voice he was sent by Charles II. to France for instruction under Lully. The King was so impressed with the genius of the boy Humfrey that he caused him to be supplied with £200 from the secret-service money, to pay the expense of his journey, and in the two years following (1665-66) sent him £100 and £150, respectively. Upon his return in 1667, he was appointed to the Chapel Royal, where the music he had brought back with him was greatly admired. He had become very skillful in the art of scoring, which, added to his own genius, enabled him to compose anthems which have remained ever since models of beauty in expression, and strikingly apt in the artistic blending of words and music. He was appointed Gentleman of the Chapel Royal (1666) during his absence in France; became Master of the Children in 1672, Composer in

Ordinary for the Violins to His Majesty in 1673, and wrote many pieces for the King's band, an organization modeled after “Les Petits Violons” of Louis XIV. His compositions are still in use (many of them still in manuscript) in all the cathedrals and churches of England and America. They are remarkable for their expression and depth of sentiment, as well as for discoveries and departures in harmony; for instance: the sharp fifth, as a passing note, the major third and minor sixth on a bass note, a sequence of imperfect fifth and the augmented or extreme sharp sixth, and the flat third and sharp fourth, combinations new to church music, were utilized by him for the first time. It is supposed from the fact that he frequently indulged in extreme keys, such as C minor and F minor, that his violinists did not use fretted finger-boards, but tempered their scales at will. He died at Windsor and was buried in the cloisters of Westminster Abbey near the southeast door.  HUMIDITY (from Lat. humiditas, moisture, from humidus, umidus, moist, from humere, umere, to be moist; connected ultimately with Gk., hygros, Icel. vökr, moist). . The moisture or aqueous vapor in the atmosphere. This vapor is really an invisible gas, and is the most important component of the atmosphere as to quantity next after nitrogen and oxygen. When this invisible vapor becomes visible it is called dew, fog, mist, haze, cloud, rain, hail, snow, frostwork, or frost, according to the size of the drops of water or the method in which the vapor condenses. Water and ice are not included under the term ‘atmospheric humidity,’ that term being strictly confined to the invisible vapor.

The aqueous vapor in the air is perpetually falling to the earth as rain or snow, and is renewed by evaporation from the ocean, the lakes and rivers, and the soil itself. The quantity of aqueous vapor in a cubic foot of air varies greatly with temperature and locality on the earth's surface. Thus in the air of Arizona and New Mexico there is oftentimes only from 3 to 10 per cent. of the amount that could be held in case the air was saturated. The quantity that can be held in a saturated space varies greatly with the temperature, but does not depend upon the barometric pressure, and is also quite independent of the presence of air in that same space, since the aqueous vapor and the dry air co-exist side by side. The elastic pressure of the dry air and the elastic pressure of the aqueous vapor added together produce what is ordinarily called barometric or atmospheric pressure. The weight of the moisture and the weight of the dry air added together determine the density of a cubic foot of atmosphere at any time. When a cubic foot of space contains as much aqueous vapor as it can possibly hold at any given temperature, it is said to be saturated with moisture. The following table shows that there may be as much in an extreme case as twenty grains of invisible aqueous vapor in a cubic foot if the space is saturated at the temperature of 100° F., and this vapor will exert an elastic pressure of about one pound to the square inch, such as would be counterbalanced by a column of mercury of about 1.9 inches of the barometer. If, now, dry air is added to this cubic foot of space until a pressure of thirty inches is exerted in all directions, then the weight of the