388 
Proceedings of the Royal Society of Edinburgh. [Sess. 
Table IV. — Planished Steel Plates (Square). 
The tabulated numbers are the pressures (lb./in. 2 ) and corresponding micrometer 
readings and central deflections of Plates Nos. 1 to 15, the length of side and thickness 
(t) being given in the first, fourth, and seventh columns, and all lengths being in inches. 
