356 W. O. Atwater on American Maize. 
was estimated by combustion with soda lime, and the result, 
multiplied by 6-25, was taken for the amount of albuminoids.* 
Here follow the results : 
Albuminoids, per ae 
A D 
I. : I. L : I. I. IL. L ; I. 
956 9°62 9°75 9°69 11°75 12-00 11:00 11°19 
Determination of Cellulose.—The cellulose was. estimated by 
alternate extraction with diluted acid and alkali (Peligot’s meth- 
od), after Henneberg’s directions, (Versuchs-stationen, vi, 497). 
As is well known, the methods for cellulose estimation are not 
entirely accurate, and the results here given are probably some- 
what too low. 
: Crude fiber ash-free, per cent. 
A. B . D. 
I, i i L 
2°52 2°40 2°21 2°63 
Another trial, no doubt less accurate, from the fact that the 
material was allowed to stand for some timé in the liquid pre- 
vious to each decantation, gave 
A. B. C. 
iF IL. I. 
1-69 1:60 1:76 
And a trial upon the material left from an unsatisfactory at- 
tempt to estimate starch, by Dragendorff’s method, described in 
Johnson's “ How Crops Grow,” p. 66, gave after extracting stare 
with dilute chlorhydric acid— 
Crude fiber ash-free. 
B. a D. 
1-03 1:34 cat: Bae 
Determination of Aqueous Extract, Gum and Sugar.—¥our 
grams o ely ground material were treated with cold wa- 
per cent of nitrogen. The other albuminoid in maize is very ne: cont a 
in, and contains 17-72 per cent of 
meet nitrogen, but as it fort 
of the grain, (Joc. cit.) we must conclude that 6-4==(100-15"6) is the proper fact 
for calculating the albuminoids. This gives the following average percentages: — 
A. C. 
9°82 9°95 12°16 11°36 
