CANE SUGAR. 



mouth and the upper end closed with the finger ; by raising the finger slowly 

 the liquid is suffered to flow slowly out until the level of the liquid is 

 coincident with the graduation mark, then by pressing the finger firmly down 

 the flow is stopped and a definite quantity of liquid is contained in the pipette. 



The first object of anyone working in a laboratory should be to keep 

 all apparatus scrupulously clean; all burettes, pipettes, hydrometers, &c., after 

 use should be rinsed with clean water and put to drain. Cleanliness is of 

 especial importance in a sugar laboratory. 



REFERENCES IN CHAPTER XXV. 



1. Chemical Engineer, 9, 4. 



2. Bull. 30 Agric. H.S.P.A. 



3. S. 0., I. 



4. 8. C., 344. 



5. Bull. 22 Agric. t H.S.P.A. 



514 



