Equipment of the Class Rooms. 



\\aici inflow and outflow is fitted, behind the lecture table; there is also a small cupboard for the 

 more frequently used chemicals. A wall heliostat is fixed on the window wall, or a window heliostat 

 in the window, opposite the narrow end of the lecture table. The projection lantern is also an 

 important part of the equipment, and great care should be devoted to the selection of this. Only a good 

 lantern should be used, and this should have an electric arc lamp; it should be adapted not only for the 

 projection of diapositives but also for projecting physical apparatus and 

 p h e n o m e n a. A stand table with arrangement for tilting should be provided for the lantern. A 

 hoisting arrangement for drawings, tables (of figures), etc. or a plan easel, and some portraits or 

 busts of famous physicists complete the equipment of the physics lecture room. 



The Chemistry Lecture Room is arranged similarly to the Physics Lecture Room both as regards 

 dimensions and in general and in connection with the preparatory room and laboratory 

 and other fittings. It should contain a special Chemistry Lecture Table having the same leads 

 and piping as the Physics Lecture Table. The chemistry bench, however, is built to conform to the 

 special conditions imposed; the top especially must be protected from the action of acids and corrosive 

 substances. On account of the frequency with which water is employed, a special outflow should be 

 provided on the bench itself. The accessories previously mentioned and complements are 

 cm ployed in exactly the same manner. 



The preparatory room is situated immediately alongside the lecture room (see Plate I) and 

 a door should communicate with the rooms behind the lecture bench. In the physics preparatory 

 room a laboratory bench, a work bench with parallel vice and anvil, and a judicious selection of mechanics' 

 and woodworking tools of good quality should be provided in special tool cupboards. A cupboard for 

 chemicals, a wall bracket for an analytical balance and also a laboratory basin with inflow and waste, 

 and a stool are necessary, and a window darkener should be fitted. For the Chemistry Preparatory 

 Room a simple tool board with the tools necessary for use and for keeping the apparatus in order will 

 be sufficient. The work table can probably be dispensed with, but, this being so, the laboratory > 

 1) e n c h must be provided with a basin, water pipe and gas piping. A flushing basin Q 

 with drying rack, a glass-blowing table, a second cupboard for chemicals and the articles mentioned 

 in connection with the Physics Preparatory Boom are requisite. It is also advantageous to have an 

 iron table topped with flagstones on which combustion furnaces, etc. may be placed. 



The collection room (or museum) for physical apparatus should abut directly on to the pre- 

 paratory room. A conveniently large number of cupboards should be provided, which can take 

 the form partly of wall cupboards with the back to the wall, and partly as cupboards ^ 

 standing alone. Further, a table for setting aside apparatus is required, and sufficient 

 clear space should be left for standing up larger apparatus, the air pump, the fall machine, 



^j 



electric influence machine, etc., without impeding the passage to the cupboards. 



The physical laboratory, of sufficient size, for the students should be provided for in the neigh- 

 bourhood of the physics class rooms. It should have the requisite number of laboratory benches and 

 stools, 1 draught cupboard, 1 blowpipe table, blackboard frame, 1 chemical cupboard, 1 balance wall- 

 bracket and a laboratory basin. 



The Chemical Laboratory should be equipped in the same manner with laboratory benches 

 and stools, a number of fume cupboards or a fume cupboard with a number of compartments, a flushing 

 table with drying rack, a table for glass-blowing, a few cupboards for chemicals and cupboards for the 

 glassware, as well as one or more wall brackets. 



It is, further, advisable to fit up a room as a dark room for photographic work, 

 photometry and for spectroscopic work. It is also practicable to have, in addition 

 to the preparatory room for the teachers, a special room as a workshop, in which repairs to a p p a- 

 r a t u s can be carried out and small simple pieces of apparatus constructed. 



For astronomical observations the following arrangement is desirable (Zeitschrift fur den physi- 

 kalisehen und chemischen Unterricht, 20, 1907, p. 403) :a platform on the roof, and beneath 

 this a store room for the astronomical instruments. 



The following are used in connection with instruction in chemistry: The chemistry class 

 room, a preparatory room for the teachers, a collection room, and a 

 large room serving as a student s' laboratory. 



For instruction in biology it is desirable to erect a special class room and a special 

 collection room. Apart from the fact that certain demonstrations can not be carried out in 



