55 



only one liuudred and forty-six proved to be sound, the rest having 

 been injured by frost. " They were all from our ' best ' patch of one hun- 

 dred and forty Early Amber stalks, excepting six stalks of Early 

 Orange, which were also from seed selected by analysis the previous 

 year." The results of 1888 and 1889 are compared as follows : 



EAKI.Y AMBER. 



Avera^i) of twenty stalks showing; high st 8ii- ( 

 crose ) 



Average of twenty stalks showiiif; lowest su- 5 

 tTose I 



Averages for all individual canes analyzed j 



EARLY OllAXOE. 



Fourteen stalks 



Six stalks 



Season. 



1888 

 1889 

 1888 

 1889 

 1888 

 1889 



1888 

 1889 



Tn cane 

 jaice. 



On tbe juice. 



Sucrose. Purity. Glacoae. 



Per cent. Per cent. 



54. U5 

 *.50. 18 



58. 42 

 t 52. IH 



54.66 

 {52.94 



55.84 

 55.87 



13. 77 

 14.26 

 9.28 

 11.47 

 12.10 ; 

 13.18 I 



12.10 

 13.35 



Per cent. 

 73 55 

 70. 45 



59.40 

 68. 24 



74.11 



70.35 

 75.60 



Per cent. 



^3.31 

 111.57 



* 10 stalks, t 9 stalks. J 79 stalks. § 32 stalks. || 27 stalks. 



It will be observed that there is a marked increase in the purity of 

 the juice and in the per cent of sucrose, together with a considerable 

 falling ofl" in the per cent of glucose. It seems improbable that the 

 decrease of glucose was due to the greater maturity of the cane in 1889. 

 On the whole it seems reasonable to conclude that the quality of the 

 cane has already been improved by these experiments. 



MisceUancowi sorghum worl'. — Analyses are reported of five specimens 

 each of Early Amber and Orange cane received from the president of 

 the State Agricultural Society, and also eleven varieties grown from 

 seed sent to the station by the United States Department of Agricult- 

 ure. None of these varieties proved to be nearly as good as the Early 

 Amber and Early Orange. 



Sugar-house icorl: — Under this head are given chemical data relating 

 to the experiments at the station in making sugar from sorghum, as re- 

 ported in Bulletin No. 7(See Experiment Station Eecortl, Vol. I, p.212). 

 The results were not successful, partly because of the low content of 

 sucrose in the cane used. The analyses given in this article enforce 

 this statement. The results of analyses of cane chips and of mill juices 

 as compared with diffusion juices are also stated. 



Sorghum sirup adulterations. — The results of a polariscopic examina- 

 tion of a sample of sirup purchased in Iowa for genuine sorghum sirup 

 and sent to the station for examination, are compared with those ob- 

 tained from a specimen known to be genuine. The suspected sample 

 apparently contained commercial glucose, the adulteration " probably 

 amounting to fully one half of the dry solids of the sirup as sold." The 

 station has undertaken to examine and report on any samples of sirup 

 which may be sent by residents of the State. 



