LABORATORY RULES 15 



5. Soil should not be sieved in the laboratory. The 

 greenhouse or potting room may be used for this purpose. 



6. At the end of the laboratory period return all stock 

 bottles and chemicals to their proper places on the shelves. 

 See that all apparatus is replaced in the lockers and that all 

 gas-burners are shut off. Wipe off the table top before 

 leaving. 



7. Anything left on the desk will be collected after the 

 laboratory period and returned to the store-room. 



