Note Return to text — APPENDIX.

In the experiments of Jamieson and Pleissner on the pressures in deep grain bins[Footnote 15] , the ratio, , of the lateral unit pressure, , on a vertical plane to the vertical unit pressure, , on a horizontal plane, was found by Pleissner to vary from 0.3 to 0.5 and by Jamieson to equal 0.6, for wheat in wooden bins of various sizes.