272 The Philippine Journal of Science 1917 



regard to a possible overproduction of alcohol ° in the future. 

 It is certain to have an increased sale for power purposes with 

 the rise in the price of gasoline. Special carburetors are sure 

 to be invented which will be adapted for alcohol or gasoline 

 interchangeably as a fuel. The data in Table IV are suggestive 

 of what will take place on a large scale at no distant date. 



Table IV. — Data obtained in Germany with various fuels and mixtures on 

 a model 191 U Mercedes car, ordinary carburetor." 



1 Distance 

 F(] _i i Speed, 1 covered 

 * uei - per hour, on 1 pint 



, of fuel. 



Parts. 



Miles. I MiUs. 

 42 4.66 









39 4. 34 





38 



42 

 44 



4.10 

 3.72 

 3.79 

 3.60 











• Chem. Eng. & Manufact. (1916), 24, 86. 



At the present price 10 of these fuels, mixtures of alcohol 

 with benzol are economical sources of power. 



England " produces 100 proof alcohol at a cost of 19.5 cen- 

 tavos per liter; Germany produces absolute alcohol at a cost of 

 from 12.5 to 15 centavos per liter; the United States at 16 

 centavos a liter of 182 proof ; and the Philippine Islands at 17.3 

 centavos a liter of 182 proof. 12 To compete with alcohol pro- 

 duced by Germany or the United States, the Philippine Islands 

 must establish efficient methods in order to reduce the cost of 

 production. 



Improvements in the process of fermenting molasses must 

 proceed along the lines of the concentration of the ferment, 

 control of the temperature during fermentation, the kind of 

 yeast used, including freedom from bacteria and wild yeast, and 

 the choice and use of yeast foods and stimulants. 



As fermentation is the result of the activity of living organ- 

 isms, a study of the most favorable conditions for their growth 

 and activity should result in the discovery of the environment 



"See Cox, Alvin J., This Journal, Sec. A (1909), 4. 232. 



10 Cost of 90 per cent benzol per liter, 31.7 centavos; gasoline, 33 cen- 

 tavos; alcohol, 182 proof, 17.2 centavos. (December 1, 191C.) 



11 Martin, Industrial Chemistry, Organic. D. Appleton and Company, 

 New York (1913), 280. 



a Calculated from data furnished by local distillers. 



