only real saving which buying direct from solution in sulphuric acid containing a steel platform plate which is now impcrative in all new oil tankers are of concrete, collapsed and plunged in water which lEngineering News Record (Feb. 27 1924). | | 7 ae : ar Omg ~<a de patlolnanyy RY i e 2 e «a 99.75 1918 30.31 1924-4, « «wa 4 TO2QcT4 IgI9g 50.08 1925.4: « & > & > & oe FA = | | O 10 20 30 40 a SS f= vie mye gh Ae | y | W c= | mym E