A STUDY OF AMERICAN BEERS AND ALES. 23 



The data reported. in Tables X, XI, and XII give the result of 

 analyses of commercial American beers obtained from various brew- 

 eries in different parts of the United States as these beers are found on 

 the market at the present time; hence, they are of general value for 

 the purpose of showing the composition of American beers. These 

 data also are of considerable interest when we compare them with 

 data relating to American beers published by the department in 

 1887. ] A comparison of these two sets of figures shows that beers 

 made at the present time have a much lower percentage of alcohol 

 and are made from a wort containing a much lower percentage of 

 solids than beers made a generation ago. The average of 28 samples 

 examined and reported in 1887 in the publication cited 1 showed an 

 average alcohol content of 4.63 per cent by weight and solids in the 

 original wort of 14.79 per cent, while the average of 72 beers repre- 

 senting the products now on the market showed an average of 3.52 

 per cent by weight of alcohol and solids in the original wort of 12.50 

 per cent. This is a reduction of 1 .1 1 per cent by weight of alcohol and 

 2.23 per cent of solids in the original wort. 



CONCLUSIONS. 



The all-malt beers made in this country contain higher percentages 

 of protein than the all-malt beers made in Europe, owing to the use in 

 this country of a barley high in protein. 



The use of rice, corn or corn products, and brewer's sugar as substi- 

 tutes for malt reduces the content of protein, ash, and phosphoric 

 acid in the finished beer. 



This difference, as regards the protein, ash, and phosphoric acid, 

 is a sufficient basis for distinguishing the all-malt beers made in this 

 country from those containing the commercial mixtures of rice, corn, 

 cereahn, and brewer's sugar. 



It is necessary to calculate analytical results to the basis of a com- 

 mon wort in order to interpret them properly. 



iU. S. Dept. Agr., Div. Chem., Bui. 13, 1887, pt. 3, p. 282. 



ADDITIONAL COPIES 



OF THIS PUBLICATION MAY BE PROCURED FROM 



THE SUPERINTENDENT OF DOCUMENTS 



GOVERNMENT PRINTING OFFICE 



"WASHINGTON, D. C. 



AT 



5 CENTS PER COPY 



WASHINGTON : GOVERNMENT PRINTING OFFICE : 1917 



