A3TALYSIS OF SOEGHUM AXD IklAIZE — METHOD. 469 



CHAPTER XV. 



(a.) Method of analysis of sorghum and maize juices used by the author in 



bis investigations. 

 (6.) Comparison of analyses with polarization of juices, 

 (c.) Specific gravity of juices. 

 {d.) Tables of average composition of sorghum juices at different specific 



gravities, 

 (e.) Tables of average composition of maize juices at different specific 



gravities. 

 (f.) Preparation of re-agents for analysis of sorghum and maize juices. 



ANALYSIS OF SORGHUM A>"D MAIZE — METHOD. 



Since the results which have been given in this vohime are practi- 

 cally those secured by the author, during his investigation of this sub- 

 ject, as the chemist of the Department of Agriculture, at Washington, 

 and as the conclusions are drawn from them, the accuracy of the re- 

 sults and methods can not be too clearly established. This will be 

 sufficient explanation for the insertion of the following : 



At the meeting of the National Academy of Sciences, held at Philadelphia, 

 in November, 1881, a paper was presented by Dr. Peter Collier, on invitation, 

 giving, in brief, .«ome of the points brought out in the investigation conducted 

 by him at the Agricultural Department at Washington, on the subject of sugar 

 from the sorghum and maize. After the discussion, following the reading of 

 this paper, a record of the meeting says: 



Mr. Silliman offered the following resolution, and moved its reference to the 

 council: 



Besolved, That the pubjpct of sorghum sugar, the experimental results on 

 which obtained, during tiie three or four years last past, by Dr. Peter Col- 

 lier, ot the Agricultural Department, submitted in brief, hy invitation, to the 

 Academy, at Philadelphia, in November, 1881, is, in the opinion of the Acad* 

 emj-. of sufficient importance to be referred to a committee of chemists, mem- 

 bers of this Academy, with the request that they give Dr. Collier's results and 

 methods a careful consideration, and report, at their earliest convenience, the 

 conclusions to which the}' come. 



The resolution of Mr. Silliman was agreed to. 



This resolution was favorably reported from the council, and the following 

 committee has been appointed by the president : 



Messrs. Brewer. Chandler, Johnson, Silliman, and J. L. Smith, from the- 

 Academy. Experts, not members of the Academy : Dr. C. A. Goessman, Mas- 

 sachusetts Agricultural College, Amherst; and Dr. Gideon E. Moore. 69 Liberty 

 street, New York. 



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