STATE IK WHICH SUGAR EXISTS IX THE CAKE. 



G7 



but proposes a very expensive addition to the sugar mill; 

 for the purpose of saturating the megass with hot water, 

 and reexpressing it between additional rollers, in order to 

 obtain the substance of these imaginary crystals. He 

 says, pages 298-9, — " The saturation of the expressed 

 canes with hot water or steam has the effect of rendering 

 soluble, matter which may be resident in them in a concrete 

 form, so that when they pass through the second set of 

 rollers they part with this desirable matter ; whereas, if not 

 so saturated, mere pressure, though carried to the greatest 

 possible extent, cannot effect this important object. It 

 has often been proved that canes contain a far larger per 

 centage of crystallizable matter than planters, even with 

 the best mills, succeed in obtaining from them. This has 

 been pronounced by the most intelligent and skilful chem- 

 ists, to be in a great degree owing to the fact of the cane 

 depositing in its cells sugar in a concrete form, perhaps 

 I should say crystalline form, as the microscope discovers - 

 true crystals deposited in the cells, which cannot be 

 obtained by mere pressure, because it is not in solution. 

 Pressure may deprive the cane of its juice, and that juice 

 may contain all the sugar, or crystallizable matter, existing 

 in it in a soluble form ; but it is evident that whatever 

 portion of it may have taken a concrete form, will remain 

 adhering to the cellular tissue, until it is brought into a 

 state of solution, when it may undoubtedly be obtained 

 by a farther pressure. It is also quite clear, that this 

 deposit of concrete matter takes place to a much greater 



