912 SEC. 21. MISCELLANEOUS. 



of the arrangements of the working benches are seen in Figs. 6 to 12. The 

 small block of buildings shown in section in Fig. 5, 'and on plan in Figs. 1, 2, 

 and 3, consists of two floors, each containing seven rooms divided into, on the 

 ground floor, 1, organic analysis room; 2 and 3, balance rooms; 4, gas 

 analysis room ; 5, library ; 6, Prof. Schorlemmer's lecture theatre for organic 

 chemistry ; 7, Prof. Schorlemmer's private room. 



The basement floor contains 1, laboratory for medical students, with 

 accommodation for 50 workers, also ventilated by the main shaft ; 2, metal- 

 lurgical laboratory containing furnaces, also in connexion with the large 

 chimney; 3, store room; 4, class room ; 5, lavatory and cloak room; 6, 

 spectroscopic room ; 7, photographic room ; 8, dark room for photometry ; 

 9, boiler house ; and 10, preparation rooms. 



The first floor, Fig. 2, contains Professor Roscoe's private room, private 

 balance room, and private laboratory with window opening into laboratories 

 Nos. 1 and 2. 



It will be seen from the plans that the block of working laboratories com- 

 municates by a corridor with the large chemical lecture theatre (capable of 

 seating an audience of 380), which has a small laboratory for the lecturer's 

 immediate use behind his platform. 



4:5 7 7 a. Drawings of the Lecture Table in the Theatre of 

 the Royal College of Science, Dublin. Prof. W. F. Barrett. 



4578. Flan of the Laboratory of Physics of the Im- 

 perial University of St. Petersburg, with an index of its 

 sections. Imperial University, St. Petersburg. 



In the plan of the room devoted to the experiments of students, there is 

 indicated the arrangement of the several groups of apparatus required for 

 demonstration. A complementary description written separately contains a 

 short sketch of the experimental problems that are successfully laid before 

 the students during their first years' experimental studies. 



