6 



will use your own discretion in this matter. You will pleaso report by mail to this 



office at least once a week the general character of the analytical results obtained. 



Any special chemical investigations desired by Mr. Parkinson or Mr. Swensou you 



will make, in so far as these may not interfere with the general work indicated above. 



Respectfully, 



H. W. WILEY, 



Chemist. 

 Dr. C. A. CHAMPION, 



Fort Scott, Kans. 



Later iii tlie season additional instructions were sent to carefully 

 compare the Brix spindles used in determining the total solids in the 

 juice with the direct determination of solids by drying a weighed por- 

 tion of the juice (2 grammes circa] and determining the per cent, water 

 it contained. This was thought necessary because it was found that 

 by determining the water directly in the masse cuites they were shown 

 to have a higher co-efficient of purity than the juices from which they 

 were derived. 



The large mill which, it was expected, would be in operation, was 

 not erected, and the directions to examine the juices therefrom were 

 therefore superfluous. 



The work at Fort Scott was begun on the 2cl of September and ended 

 October 19. 



The sucrose in the juices was determined by polarization in a Laurent 

 large model instrument, with white light attachment. During the later 

 part of the season a Schmidt and Haensch double compensating shadow 

 instrument was employed to check the results of the instrument first 

 named. 



The glucose was determined by Fehling's (Violette's) solution. 



The total solids were determined by Brix spindles and by direct 

 weighing. 



Following are the results of the analytical work : 



ANALYSES OF JUICES OF SELECTED CANES. 



For sampling different lots of cane, comparing saccharine richness, 

 etc., the juice of single canes, or small collections thereof, was exam- 

 ined at different periods. In these cases it would be expected that 

 much greater difference would be found than in the average samples of 

 chips in the second table. The results show how rich single canes of 

 sorghum may be in available sugar, and also how poor. 



The maximum content of sugar is found in sample No. 9, viz, 14.20. 

 The minimum is seen in sample No. 8, where the sucrose drops to 2.54 

 per cent. 



DESCRIPTION OF SAMPLES. 



No. 1. Orange cane sample from Bullock. 



2. Orange cane sample from Bowman. 



3. Orange cane sample from Zoak. 



4. Late planted early amber from Brown. 



