S.A. Assn. for Adv. of Science. 



1916. Pl. 24. 



Plumbers' Shop, Johannesburg Trades School. 

 Fig. 3. 



Macliine .Slin]), Mechanical Section, Jolianncslmrg Trades Sc]u)ol. 



h-ig. _|. 



J. Orr.— Trade Schools. 



