17 



ENGINE TESTS. 



Tests were made with three different makes of gasoline engines 

 having ordinary compression pressures, each of which are in gen- 

 eral use throughout Iowa. These tests were not as exhaustive as 

 might have been desired from several standpoints, but a further 

 continuation of the tests was not deemed advisable because the 

 Section was unable to secure an engine designed specially for 

 alcohol. And it was further found practically impossible to prop- 



Engine No. 1. Used in the Engine Tests. 



erly alter the design, of any of the larger gasoline engines found 

 in the laboratory, for the most advantageous use of alcohol. 



But the work was carried far enough to show that alcohol 

 probably would not come into successful competition with gaso- 

 line in the production of power, when the cost of alcohol per gal- 

 lon is greater than that of gasoline, even in the special designed 

 engine. Conditions under which alcohol will be able to compete 



