THE UTENSILS OF THE CULTIVATION OF BACTERIA. 63 



3. Cylindrical brushes with reed handle, and wire-handled 

 brush of Lentz & Sons, for the purpose of cleaning test-tubes 

 (Fig. 14). 



FIG. 14. 



Brushes for cleaning test-tubes : a, with reed handle ; 6, with wire handle. 



4. Bohemian glass flasks of 1 and 2 liters capacity. 



5. Platinum needles, straight and looped, mounted in glass 

 rods (Fig. 15). 



FIG. 15. 



(a) Looped and (6) straight platinum wires in glass handles. 



6. Plates of ordinary glass about 4 by 5 inches, and Russia 

 iron boxes to hold them during sterilization (Fig. 16). 



FIG. 16. 



Russia iron box for holding plates, etc., during sterilization in dry heat. (Abbott.) 



7. Glass benches for supporting plates (Fig. 17). 



