GLUCOSE. 



157 



glucose solutions, but not of solutions of cane sugar — except at com- 

 paratively high temperatures — appears to signify that the osmotic 

 pressure of glucose obeys the law of Boyle. Perfect uniformity of ratio 

 at a given temperature means, of course, that the osmotic pressures are 

 proportional to the concentration of the solutions, which is the form 

 of Boyle's law as applied to solutions. But any extended discussion 

 of this subject at the present time would be premature. 



The essential facts connected with glucose Series I to III are sum- 

 marized in Tables 44, 45, and 45a. 



Table 44. — Parallel series of glucose and cane sugar. 



Table 45. — Glucose, Series I to III. 



