204 S. W. Johnson— Composition of Maize Fodder. 



The further examination consisted in extracting the pulyer- 

 ler with water, evaporating the solution, to determine 

 total quantity of soluble matters, redissolving in a little water 

 and treating with 80 per cent alcohol to throw down gum. 



This treatment was carried out both with cold and hot water. 

 The results were as follows, calculated on dry substance : 



The water extract gave a reaction with Fehling's solution, 

 showing the presence of a little sugar. The alcohol pi 

 when redissolved in water gave no reaction with Fehliflg 1 

 solution but contained a trace of albuminoid. 



Starch is carried into solution by boiling with water, and 

 soluble gum is more completely extracted by the hot macera- 

 tion of the imperfectly pulverized material. 



These laborious trials were not duplicated, and it is not fully 

 i whether the absence of gum in 2 is the result of a 

 possible error in analysis or the consequence of maturer devel- 

 opment of stalks. The larger quantity of hot water extract in 

 2 is not improbably due to the presence of seed kernels with 

 abundant starch. 



The results agree fairly with the average of a number of 

 analyses made of late years in Germany and Austria, which, 

 however, doubtless refer usuallv to a much smaller plant and 

 crop. 



The subjoined statement gives : A, the average of my two 

 analyses ; B, the average of the German analyses as given by 

 Wolff, Piitterungslehre, 1874; C, the average given by Dietrich 

 and Kb'nig, 1874. All refer to the fresh fodder. 



Total Yield.— The following figures give the gross 

 the two crops upon an area of 100 square feet as 

 by Mr. Webb's weighings, and also the produce 

 (found by multiplying these weighings by 4 f "" ; - 



-of water and dry mu- 

 tinies of weighing. 



