The public utilities decided upon for investigation, as con ducted by private companies and by municipalities, were gas, electric lighting and power, water, and street railways.* Immediately after the adjournment of the Commission, the Committee on Investigation, otherwise known as the Committee of Twenty-one, held its initial meeting, the Hon. M. E. Ingalls presiding. A committee, known as the sub-committee of Five, was appointed to prepare a scheme of investigation and procedure and to supervise the work when the full committee was not in session.