L.1898, c. 197, p. 458 (C.S. p. 3153, s. 38), entitled “An act relating to the use of the public streets by electric light, heat and power companies,” approved May eighteenth, one thousand eight hundred and ninety-eight, saved from repeal. [This act validates the construction, reconstruction and extension of subways and pole-lines by electric light, heat and power companies, as well as contracts entered into between such companies and the several municipalities.]