Integral Calculus

See Calculus.

Intermittent Fever

See Fevers.


Ionies, a small tribe of Indians in the United States, belonging to the family of the Cad-does or Cadodaquios. They regard the Hot Springs of Arkansas as their original seat. They formed part of the confederation known to the Spaniards as Texas or Friends, and were first known about the time of La Salle, who passed through their country. They were long on the Red river, but about 1823 moved into Texas, finally settling on the Brazos. With the Caddoes they had suffered from disease and from the attacks of the Osages and Co-manches. Their houses are a conical framework of poles, about 25 ft. in diameter and 20 ft. high, thatched with long prairie grass, with low doors. They are among the best of the Indian tribes, cultivating enough land for their support. They were removed by government in 1859 to the "leased district" on the Washita river near old Fort Cobb, Indian territory, and in 1872 numbered only 85.


Iosco, a N. E. county of the southern peninsula of Michigan, bordering on Lake Huron and Saginaw bay, intersected by the Au Sable, and drained by the Au Grais river; area, 575 sq. m.; pop. in 1870, 3,168. The surface is nearly level, and partly covered with pine forests. In 1870 there were 11 saw mills, producing $646,151 worth of lumber, and 1 manufactory of ground plaster. Capital, Tawas City.

Iowa River

See Iowa.

Ipollonlos Von Maltitz

Ipollonlos Von Maltitz, baron, a German author, horn in Konigsberg in 1795, died in Weimar, March 2, 1870. He was a brother of the poet Franz Friedrich von Maltitz (1794 - 1857), and like several of his relatives he rnployed in the diplomatic service of Russia, representing that empire at Weimar from 1841 to 1865. He published novels, poetry, dramas, tragedies, comedies, and an autobiography (1863), His best known tragedies are Virginia (1858), Anna Boleyn (1860), and Spartarus. - Another distinguished poet of the same family was Gotthilf August vox Maltitz (1794 - 1837).

Ippolit Fedoroviteh Bogdanovitch

Ippolit Fedoroviteh Bogdanovitch, a Russian poet, born in Little Russia in 1743 or 1744, died near Kursk, Jan. 18, 1803. He was sent at the age of 11 by his father to Moscow to be educated as a surveyor. Four years afterward he applied to Kheraskoff, the manager of the theatre there, to receive him into the company. Kheraskotf refused his application, but enabled him to enter the university, where in 1761 he was made inspector. He found protectors among the influential nobility, and was sent some years afterward as secretary of legation to Dresden, where he commenced his beautiful romantic poem Dushenka, which was not published till 1775. Besides this, his chief work, he published songs, minor poems, and many translations, and edited various periodicals. He was patronized by Catharine II., and after her death retired from the public service, and spent the rest of his days at a country seat in the interior of Russia.