Jelly Fish
a name for bell-shaped or disk-like marine Hydrozoa, for the most part active swimmers. One set, known as Acraspeda or Acalephæ, are usually large, a giant specimen of Cyanea, had a bell 7½ feet across, and tentacles 120 feet long. Beset with myriads of stinging cells, these "blubbers" often make bathers more than uncomfortable. The common Aurelia is a well-known representative, while the exceptional Lucernarians have a more or less sedentary life attached to sea-weeds and other objects. Included among the craspedote hydrozoa, are the Trachymedusæ, of which Geryonia is a good great number of type. Finally, type. Finally, a great number of medusoid forms, usually small in size, very closely resemble the Trachymedusæ, but differ both from them and from the Acraspeda in being the liberated sexual "persons" of hydroid or zoöphyte colonies. a
JEMAPPES (zhuh-mäp'), a village in the Belgian province of Hainault. Here the French Republicans under Dumouriez, on Nov. 6, 1792, defeated the Austrians, which victory placed Belgium in the power of the French. The village stands on one of the richest coalfields of Belgium, and manufactures stoneware, glass, and chemicals. Pop. about 15,000. The village was occupied by the Germans in 1914. It was one of the TEN ered by a town of Huchy of Sa was oper teachers, cal garden scientific of 276 students. 8 (70,000 were defen Napoleon Pop. about CAN. See CIAH WH t and writ 1856. Be of Michig ate courses as admitted practice ght Greek 389 was d English He was pr social scie am 1889.to 912 he was at Corner 1917 be and direc Fairs in N me in 1919 ment and 1 as expert dustrial Co custs and E United S so special Departmen f currency or, and He acted al form in M 204 he acte currency i was a me migration member of t of the Al He wrot ubjecte, in (1900); Questions Colonies also edited States Ing JENA JEPSON last places recovered by the Allies in Commission. He compiled and edited
JENA (ya'na), a town of Germany, in the former grand-duchy of Saxe-Weimar; 12 miles E. of Weimar, on the Saale, place of little importance except for its ale, a university, which was opened in 1558.
It has (1915), 121 teachers, an anatomical theater, cal theater, botanical gardens, zoölogical scientific collections, observatory, library of 275,000 volumes, and (1915), 1,666 students. On Oct. 14, 1806, the Prussians (70,000 men) under were defeated here by the French under Napoleon Bonaparte with 90,000 men.
Pop. about 40,000.
JENGHIZ KHAN.
KHAN. See GENGHIS