62 



Equipment of Lecture Rooms and Laboratories of Institutions whose Funds are not restricted. NO- 30352- 



p 

 x 



50 352. 1 : 2r>. 







50.352. Lecture Table, in the Chemistry Class Boom as the ,,Oberrealschule", Furstenwall- Price on 



strasse, Dusseldorf (Figure) appli- 

 cation 



The table is 4.5 m long, 90 cm high, 84 cm wide. The top is of 40 mm thick oak, in frames; 

 thick plate glass sheets, ground on the underside, are built into the top. The body, of pitch-pine , 

 (the inner floors and side walls of red deal) has two double-door cupboards and 8 drawers. 



The gas lead of the table has 4 gas stopcocks with hose unions turned upwards and 1 wide 

 stopcock of 8 mm bore. The water lead has 1 hose stopcock, 1 main stopcock for the pneumatic trough ; 

 1 hose stopcock for the blower and I iron water standard with 3 taps. Alongside this tap standard 

 there is a square wood attachment, which serves as a reagent stand. There is also 1 water jet blower 

 with bronzed metal cylinder, gauge glass, screw off pump with stopcock and vacuum gauge, stopcock 

 with movable hose point for the compressed air, and with inlet tap. Below the water standard is a 

 large square porcelain basin with overflow, wood grating let in, lead valve and waste pipe. At the centre 

 of the table is placed a pneumatic trough of sheet zinc, with direct water-delivery, overflow pipe and 

 waste valve built in. The cover of this trough forms a polished slate slab, which can be lifted out by 

 means of a handle which is inserted. To the right of the pneumatic trough there is a porcelain sink 

 with enamelled iron cover. To the right a gas draught pipe is fitted. At this point a rectangular 

 groove is let in the table top and this serves as a mercury gutter, a glass box, with door can be set 

 upon this gutter, and is used as a stink cupboard in conjunction with the draft pipe in the table. 



50.353. Equipment of the Laboratory for Applied Chemistry, Leipzig (Prof. Beckmann), Pl j ce on 



F i g S. A to G appli- 

 cation 



The illustrations show the equipment of the Analytical Room (F i g. A), of the Medical Labora- 

 tory (Fig. B), the Mechanical Workshop (Fig. C), and of the Combustion Room (Fig. D). 



'We shall be glad to supply free of cost, complete estimates for such installations. 



F i g. E shows the ventilation in the doors of the Sulphuretted Hydrogen Room, F i g. F the 

 Sulphuretted Hydrogen Offtake in a Sulphuretted Hydrogen Room, F i g. G the Sulphuretted Hydrogen 

 Offtake in a Medical Laboratory. 



Further particulars as to the equipment are contained in the pamphlet ,,Das Laboratorium fur 

 angewandte Chemie der Universitat Leipzig in seiner neuen Gestaltung", by Dr. Ernst Beckmann, 

 Leipzig, 1908. 



The blocks for these and some other illustrations have very kindly been placed at our disposal by 

 Dr. Beckmann. 



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



Cl. 4641. 



