Chapter 50, Section 1.

Acts of Washington, 1907, Chapter 153, Section 20.

Charter of New York City, 1901, Article 950.

Acts of Massachusetts, 1906, Chapter 393, Section 5.

Changed by Chapter 536, Acts of 1913.

Report of Chief Engineer, Board of Estimate and Apportionment, October 19, 1907, p. 3.

Ibid., p. 14.

Report of Chief Engineer, Board of Estimate and Apportionment, October 19, 1907, pp. 5 ff.

Acts of Massachusetts, 1891, Chapter 323, Sections 14, 15.

Acts of Massachusetts, 1902, Chapter 521, Section 14.

Acts of Massachusetts, 1913, Chapter 536, gives the street commissioners discretion and removes the limit of 50 per cent.

Acts of Massachusetts, 1902, Chapter 521, Section 1.

This restriction was removed by Acts of Massachusetts, 1913,