173 



i "i CLARIFICATION AGENTS ON POLARIZATION. 



The work carried on was a continuation of that taken up a number of years ago. 

 The clarifying agents studied were neutral lead acetate, subacetate of lead, both wet 

 ami dry, 1 [cries' solution or basic lead nitrate, and hydrosulphites. An additional 

 feature was the comparison of the results obtained when using the necessary amount 

 of i hi- precipitant and when using an excess. 



The results on the su-ar and molasses samples will be considered separately and for 

 a better comparison the results obtained by using the necessary amount of clarifying 

 air'-iit will be discussed. Following this the results of using an excess of clarifying 

 agent will be considered. 



of sugar with different clarifying agents, using only amount necessary for 

 clarification. 



(Normal weight to 100 cc; polarized in 200 mm tube; sucrose factor 142.66.] 

 St H.\i KTATE OF LEAD. 



I>KY SfBACKTATK OF I.KAD. 



XKfTKAL I.KAD ACKTATE. 



M.Sbrix. 

 &56.0brix. 



e Not included in average. 

 d 1.25 sp. gr. 



10 per cent solution. 

 /20 per cent solution. 



