380 Polytechnic Institute of Vienna. 
fic theses are annually held, and the more distinguished pupils 
are employed in the public service, or engaged in the manu- 
factories. These pupils are not maintamed at the public ex- 
pense; their instruction only is gratuitous: their number, 
which in 1816 was only 300, amounted in 1822 to 720. Work- 
shops have been erected, in which models of machines, and 
mathematical and philosophical apparatus are manufactured. 
Courses of instruction have been opened also on Sundays, for 
the benefit of the workmen, which are well supported. The 
museum, or conservatory, contains a numerous collection of 
the products of industry, and is enriched by the legacies and 
donations of individuals, and successive acquisitions, It con- 
tains, besides, a choice library of near 9000 vols. a chemical 
laboratory, general and special, with more than 500 pieces of 
apparatus, a philosophical cabinet, enriched with 700 instru- 
ments, made by the ablest artists, a collection of 8000 speci- 
mens of minerals, another of 300 instruments of precision and 
observation, formed by Reichenbach ; a cabinet of 300 models, 
fabricated sts of the Austrian monarchy, and of their 
successive 2 goes They are arranged in methodical order, 
on vs oa which may serve as a model for similar collections. 
Metallic products, glass, porcelain, and potteries, occupy the 
first rank ; then the*tissues of linen, silk, cotton, and wool; 
bonnet stuffs, lacing, paper, leather, &c. A detaileddeseription 
of this collection is contained in the 4th vol. of the Annals of 
the Polytechnic Institute, a work worthy of attention for the im- 
portance of its memoirs on various portions of science and 
arts, drawn up mostly by the learned professors of the esta- 
blishment. ste ia 
‘Independently of the above mentioned collections, the In- 
stite possesses a cabinet of more than utensils and in- 
struments, employed in the arts and trades, among which is 
a complete assortment of the instruments of the bookbinder, 
containing, besides presses, &c., punches, fillets, rollers, &e. 
bipetin well executed. To their national instruments 
are joined the same kind of English and French workman- 
ship. The various utensils, also, of the joiner and cabinet- 
