Lecture Tables. 



9 



Equipment of the Class Rooms of Public Schools and Colleges. 



Lecture Tables for Physical and Chemical Instruction. 



We supply the table tops either in teak or oak. The teak possesses the property of neither 

 cracking, shrinking nor warping in the wet or dry state. Oak which is intended to be worked up into 

 bench tops is used only after having lain for a "number of years upon the drying heap, and, finally 

 remained in the cut up condition, in our steam drying room for a number of months. Only thoroughly 

 well seasoned wood is employed in our joiners' shops. We utili-e pitch pine exclusively for the body 

 of the tables: this wood being quite free from knots and being the most suitable for laboratory pur- 

 poses. Only the bottoms and inner walls of the drawers are constructed of deal. All tables and cup- 

 boards have oak bottom fillets which do not become disfigured when knocked. Unless advised to the 

 contrary, we supply all tops varnished with three coats of linseed oil. If desired, however, the tops 

 can be supplied stained an acid proof black. 



All taps, leads, valves, etc. for gas, water, aspirated and compressed air, etc. are constructed 

 in a reliable manner in our own workshops, and only the best of materials are used for the purpose. 

 The gas taps have hose unions bent in an upward direction, thus obviating any tearing or pinching 

 of the hose itself. The leads and piping are also fitted on to the benches in our workshops by workmen 

 possessing years of experience in such work. Our customers are therefore guaranteed the most sub- 

 stantial and reliable workmanship in this connection. 



The lecture tables can be made of any length desired; we have built benches up to 18 m 

 in length. 



The following lecture tables are those which are intended in the first place to be used in 

 High Schools and Colleges. 



50 003. 1 : 22. 



Lecture Table (as suggested by W e i n h o 1 d), chiefly intended for instruction in Physics, 

 but also adapted for Chemistry in the case of a common room being used for both Physics 

 and Chemistry (W. D., Plate III and Figs 13, 14, 15) (see Fig. 50,003). 



. s. d. 



With oak top ( List Xo. 50,001 50,002 



impregnated with ! Length of Table m. 3 3.5 



linseed oil [ Price of Table 21. 10. 24. 4. 



50,003 50,004 50,005 



4 4.5 5 



27. 0. 29. 10. 32. 0. 



With teak top ( List Xo. 50,006 



impregnated with] Length of Table m. 3 

 linseed oil [ Price of Table 24. 0. 



50.007 



3.5 

 27. 0. 



50,008 



4 

 30. 5. 



50,009 



4.5 

 33. 0. 



50,010 

 35. 15. 



The approximate gross weights, with batten packing are : about 330 kg for a length of table of 

 3 m. 390 kg for 3,5 m, 435 kg for 4 m, 480 kg for 4,5 m and 550 for 5 m.' 



The table is 90 cm. in height and 80 cm. in width. The top is oak, 40 mm. thick, is composed 

 of framework and pannellings, and is varnished with three coats of hot linseed oil or stained an acid-proof 

 black (at a slight extra cost). At the left hand side of the table top a slate slab. 54 cm. in length and 

 54 cm. in width is let in, upon which work involving the use of acids can be carried out without in 



a i. 



