Areolar Tissue
a tissue widely diffused through the body, and composed of white and yellow fibers, the former imparting to it strength, and the latter elasticity. Areolar tissue protects from injury the parts of the body in which it occurs, and when placed in the interstices of other tissues it keeps the latter from moving as freely as otherwise they would, The cutis vera, or true skin, is composed of it. an AREOMETER (ar-e-om'e-ter), instrument designed to measure the specific gravity of liquids. The simpler areometers measure only the relative weights of liquids. They consist of a AREOPAGUS tube of glass, terminated in a ball at its lower part, and divided into equal portions through its whole length. Another ball filled with mercury is soldered below to keep it vertical. The depth to which it sinks in various liquids is in the inverse ratio of their relative specific gravities.
AREOPAGUS (ar-e-op'ā-gus), the name of a hill or rocky eminence lying to the W. of the Acropolis at Athens, which was the meeting-place of the chief called the Council of Areopagus. It was of very high antiquity, and existed as a criminal tribunal long before the time of Solon, who enlarged its sphere of jurisdiction. As a court of justice, it took cognizance of capital crimes, as murder, diction. As a court of justice, it took cognizance of capital crimes, as murder, arson, etc.; and it also exercised a certain control over the ordinary courts. Its censorial duties were of a very extensive and inquisitorial ial nature, for the preservation of order and decency. Religion also came within its jurisdiction, which puned it of came within its jurisdiction, which pungreatly diminishing the power of this council, and deprived many of its old prerogatives. icles succeeded in greatly diminishing the Peru, capital of the department of the same name (area 21,951 square miles; pop. about 300,000); 40 miles from the Pacific Ocean, on the Chile river; altitude, 7,850 feet above sea-level. It is a bishop's seat, has a college, several convents, and a cathedral. Its trade is large. Gold and silver are mined in the vicinity. A Pacific Ocean, on the Chile river; altitude, 14, 1868, which destroyed much property and killed 500 persons. Near by Harvard University has an observatory, at an al- 14, 1868, which destroyed much property 40,000.
AREZZO (a-rēt'sō, ancient Arretium), a city of central Italy, capital of a prov- University has an observatory, at an althe confluence of the Chiana with the Arno. It has a noble cathedral, remains of an ancient amphitheater, etc. It was one of the 12 chief Etruscan towns, and in later times fought long against the Florentines, to whom it had finally to the confluence of the Chiana with the Petrarch, Pietro Aretino, Redi, and Vasari. Pop. about 50,000. The province of an ancient amphitheater, etc. It was one of the 12 chief Etruscan towns, and in later times fought long against the Pop. about 300,000.