Fk 



Fig. 4 



Fig. 3. A Ckoss Section of the Super-Centrifuge 

 Fig. 4. Test Tube and Flask Washing Machine Driven by Electric Motor 





I . II I MII U PW— —» 



-*£mk 



Fig. 5 



Fig. 



Fig. 5. Modification of Figure 4 

 Fig. 6. Test Tube and Flask Washing Machine Driven by Water Motor 



562 



