18 



The following means are given by Konig-Dietrich for barleys from 

 different countries: 



*In this and the following numbers the mean percentages of water found are given, but the other 

 data are calculated to the basis of the percentage of water in the first instance, viz, 14.05. 



A typical unlmlled American barley should have approximately the 

 following composition : 



Per cent. 



Moisture 10. 85 



Albuminoids 11. 00 



Oil 2.25 



Indigestible fiber 3. 85 



Ash 2.50 



Digestible carbohydrates 69. 45 



In a general comparison of the samples exhibited at the World's 

 Columbian Exposition it is seen that the average data obtained repre- 

 sent very nearly the mean composition of barleys the world over. 

 They show decidedly more moisture than those formerly examined by 

 the Division of Chemistry, but less than the majority of foreign barleys 

 as quoted by Konig. Eepresenting as they do the presumably typical 

 barleys and the best of their classes their composition, as revealed by 

 the analyses given, maybe taken as a standard of comparison for barleys 

 in general. 



No attempt was made in the analyses to determine the comparative 

 value of the samples for brewing purposes, and this can not be well 

 determined by chemical analysis alone. Some authorities object to 

 barleys rich in albuminoids for brewing purposes, but, inasmuch as the 

 nutritive value of a beer depends largely upon its percentage of albu- 

 minoid matter, it is not readily seen how the objection can hold from a 

 dietetic point of view. On the other hand, beers which have a high 

 content of proteid matter are more difficult to preserve in a bright, 

 sparkling condition than those whose nitrogenous content is low. The 

 choice therefore of a barley for brewing purposes must depend largely 

 on the judgment of the brewer as to the purposes for which the beer is 

 to be used. There is no reason to suppose that the barleys grown in 



