POLYXENA, daughter of Priam and Hecuba. The shade of Achilles appeared to the returning Greeks in the Thracian Chersonese and demanded Polyxena, who was put to death on his tomb. As a prominent leader he claimed a prominent female prisoner for his share of the booty, as Agamemnon did Cassandra (q.v.). Hence, in Philostratus, Dictys and other late authors, the story of a romantic affection between Achilles and Polyxena.
John Cass Technical institute, present students for the internal degree examinations of the University of London, certain mem bers of the teaching staff ranking as recognized teachers of the university. The subjects taught embrace the chief technological and commercial processes required for industrial and scientific processes in the London trades, varied according to local require ments. Careful attention has been given by the London County Council to secure that in the larger polytechnics and technical institutes there should be an organized concentration of effort; that an institution whose circumstances were such that it could with advantage, for regional or other reasons, specialize in branches of instruction affecting one trade or group of trades should seek development in the direction suitable to it, rather than indulge in competition in other directions in which adequate provision is made by another institution. In accordance with these principles the governing bodies have accepted suggestions from the London County Council involving important revisions in the educational programmes of the different institutions. Evening classes for commercial instruction have, in many cases been transferred to the council's evening institutes. Various branches of technology and art have been concentrated at certain institu tions, and secondary schools previously housed in certain poly technics have, with one exception, been removed.
Most of the polytechnics have now developed characteristic features. Battersea polytechnic has important departments of engineering and chemistry and also a training college for domestic science teachers. The Borough polytechnic has achieved notable success in the training of the artisan; it also conducts an im portant school of bakery and confectionery in co-operation with the National Association of Master Bakers and Confectioners. At
the Chelsea polytechnic there is a natural science department and a chemistry department (including a school of pharmacy) ; there is also a training college for physical education. The City of London college deals exclusively with commercial studies and the marketing of commodities. Engineering, telegraphy and tele phony, aeronautics and technical optics are taught at Northampton polytechnic. The Northern polytechnic has an important archi tectural and building department and also gives instruction in the rubber and musical instrument trades.
The programme at Regent street polytechnic embraces a wide field of activity and includes important departments of archi tecture, art, chemistry, commerce, engineering, modern languages, photography, carriage and motor-body building, hairdressing and tailoring; a large secondary school for boys is also conducted at the polytechnic. There is an important chemistry department at the Sir John Cass Technical institute and among the special fea tures are classes in petroleum technology and the fermentation in dustries. Engineering is the foremost subject of instruction at the Woolwich polytechnic, and special courses are held for apprentices at the Royal Arsenal. Provision was made under the original schemes of the Charity Commission for the erection of the North Western polytechnic in Kentish Town. Owing to the delay in securing the site and later owing to war difficulties, building operations for the erection of this polytechnic were only com menced in 1927. The building is now nearing completion and the polytechnic will be opened in 1929. Birkbeck college was con nected with the polytechnic movement, but this connection ceased in 1920, when the college became a School of the University of London, in the Faculties of Arts and Science, for evening and part-time students. (G. H. GA.)