60 



Equipment of Lecture Rooms and Laboratories of Institutions whose Funds are not restricted. 



Nil 50360 



50 350. 1 : 25. 



50,350. Lecture Table (as suggested by Prof. Otto X. Witt), for Chemistry, Figure, as s. d. 

 supplied to the Institute for Chemical Technology of the Eoyal Technical High School, Pr i ce on 

 Berlin (Charlottenburg) appli- 

 cation 



The lecture table is 5 m long, 80 cm wide and 90 cm high. The top is of teak 40 mm thick. 

 being composed of frame and pannellings, and has a 50 cm leaf on the right-hand side. Facing the 

 auditorium are 4 extending boards. The table top is thrice coated with hot linseed oil, and can. if 

 desired, be stained an acid-proof black. The body is constructed of pitch-pine, and lias 1 large and 

 small drawers, a box lined with sheet iron for waste paper, etc., and a number of open cavities. 

 The base fillets are of oak, rounded at the edges so as not to be disfigured by knocking and to resist 

 hard wear. The table has a gas lead with 1 hose stopcock for 40, 1 hose stopcock for 10, and 5 hose taps 

 each for 1 burner; water lead with 3 hose taps, leads for aspirated and forced air, each with 1 cock, 

 draught channel 17 x 17 cm inside width with iron cover plate: and an electric lead. The latter consists 

 of two stout brass rails, let into the table, and covered with wood, provided every 4n cm vuth conical 

 holes for taking 8 plugs; there is also a plug contact for taking 50 amps. All leads are laid ready 

 to the floor. To the left of the table is a large white laboratory basin with earthenware plug and 

 lead waste pipe; a pneumatic trough, which can be lowered under the table top, and constructed of 

 thick sheet copper, 50x30x20 cm, with 4 crystal glass sheets. In addition there is a knife switch 

 for 150 amps., and 4 crystal glass shielding discs for protecting the audience from spurting liquids. 

 These panes can be lowered under the table top, being raised automatically on to the top by presMim 

 a knob. There are also 2 rising slabs for providing hollows for working with mercury, etc.; one of 

 the cavities has a slate floor. The hose lines laid round the edge of the table are under special hose 

 flaps (of which there are 6), to prevent dragging or squeezing. Three special holders are fitted for holding 

 steel flasks for gases; 5 magnalium rods, serving as stands, can be inserted into any of 10 brass bushes. 

 One lecture desk, of oak, for setting on the lecture table, is given in. 



See also the Lecture Tables at the commencement of this List. 



Cl. 3826. 



