1884.] Determination of Pressures of Granular Substances. 231 



Table III. — Weighings of the Bottom or Vertical Pressures of Wheat. 

 Size of the Aperture used = l ft. Oin. X 1ft. Oin. = l square foot. 





Wheat 2 ft. 4 ins. 

 high in bin. 



Wheat 51 ft. 9 ins. 

 high in bin. 



Dormant 

 pressure 

 in lbs. 



Active 

 pressure 

 in lbs. 



Dormant 

 pressure 

 in lbs. 



Active 

 pressure 

 in lbs. 







50 



193 



50 







50 



226 



50 







50 



229 



50 



Mean .... 





50 



216 



50 



Table IV. — Weighings of the Side or Lateral Pressures of Wheat. 

 Size of the Aperture used =3 ft. Oin. X 3 ft. in. = 9 square feet. 





Wheat 6 ft. high 

 in bin. 



Wheat 7 ft. 3 ins. 

 high in bin. 



Wheat 9 ft. high 

 in bin. 



Wheat 45 ft. 6 ins. 

 high in bin. 





o 





cd 

 t-t 





? 



.9 



CD 







u 



m 



© 

 B 



CD 



CD 



FH 



3 



to 

 go 

 CD 



S 



f-l 



00 

 00 



CD • 



CD 

 oo 







CD 00 





i presi 

 lbs. 



M 



O0 . 



CD 00 





© 02 





1 — 1 



i.s 





43 r— 1 



l.s 





&9 



CD 



>rmant 

 in 



P-,'- 



CD 



O 





a 



o 



CD 

 P» 

 43 



1 



°43 



o 





p 



e 

 -4 



p 



o 



p 



o 

 <l 



P 







272 

 279 



33*5 

 330 

 261 



225 

 265 

 214 

 263 

 235 

 202 



385 

 300 

 325 



300 

 250 

 259 





224 

 227 

 220 

 230 



367 

 350 

 313 

 365 



218 



285 

 250 

 240 



Mean 



295-4 



234 



336-67 



269 -67 





255 -25 



348 -75 



248 -25 



Note. — In all the weighings of side pressures the height of the 

 wheat in the bin is measured from the lower edge of the apertures 

 respectively. 



Y0L. xxxvi. 



