236 



Mr. I. Roberts. 



[Jan. 31, 



pressure was 96 lbs., and when a man wbose weight was 170 lbs. 

 stood upon the wheat, close to the aperture, the pressure was 127 lbs., 

 being an increase of 31 lbs. only beyond the pressure of the wheat 

 without the man. 



It therefore appears by the weighings of the lateral pressures 

 given in the Tables, that in no case is the maximum dormant pressure 

 in a bin measuring 6 ft. 9 ins. by 6 ft. on plan, and 45 ft. 6 ins. in 



