132 THE NATIONAL SCIENTIFIC INSTITUTIONS AT BERLIN. 



The Laboratory of Organic Chemistry. — Ei'ected by Prof. A. Baeyer iu 

 1860, with eighteen studeuts as part of the former Technical Academy. 

 It was enlarged to forty places on occassion of the re-constructiou of the 

 Technical High School. It is used by students of the fifth and sixth 

 terms. The studies comprise analytical and preparative exercises in 

 the field of organic chemistry ; facilities are given for independent 

 researches. 



The Metallurcjical Laboratory. — The institute is the most recent of the 

 laboratories of the Technical High School. In addition to the lecture 

 rooms, and the room for the instruction of drawing and projecting, of 

 smelting works, etc., the Laboratory comprises: (1) the metallurgical 

 laboratory ; (2) the assaying laboratory, and the metallurgical collec- 

 tion. 



The assay laboratory of sixteen seats, and separated from the assay 

 room by a glass door, occupies a separate room. It is provided with 

 all necessary apparatus, consisting of muffles, wind furnaces of various 

 sizes, tables, and quenching troughs, etc. 



A forge and some storage rooms complete the facilities of the labor- 

 atory. 



The Laboratory confines itself to the examination of metals, flux, 

 smelting products, fuel; it pays special attention to gas analysis in its 

 relation to generator gases, noxious gases, etc.; to electrolysis ; to the 

 examination and production of fire- proof articles. 



The Laboratory of Technical Chemistry. — Established in 1884, the Lab- 

 oratory occupies rooms on the second floor for an auditory and chemico- 

 technolugical collection consisting principally of raw materials of inter- 

 est to the chemical industry, especially those employed in ceramics, 

 glass manufactory, textile industry, manufactory of sugar, also inter- 

 mixtures, and finished articles. 



The Photo chemical Laboratory. — It was established in 1864 as part of 

 the instructions of the Technological Institute; photographic experi- 

 ments were added in 1865, experiments with intermittent light in 1870, 

 spectral analysis in 1873, lectures on electric-lighting in 1881, and lect- 

 ures on interior application of electric light in 1886. The object of the 

 Laboratory has received due consideration in there-organization of the 

 Technical High School. 



The Royal Meehanico-technical Institute. — The object of the Institute 

 is to make official tests of materials required in technics, with the ex- 

 ception of building materials, and to undertake scientific examinations 

 in that direction. It was established in 1871, and in 1878 received its 

 l)reseut organization, which i)rovides for the general supervision of this 

 and of its connection with and relation to other similar establishments 

 by the royal commission for the supervision of the technical experi- 

 mental institutes. 



The Institute comprises three divisions, of which the first is to ex- 

 periment on finished articles of metals, belts, ropes, chains, woods, 



