The second session while he was a member commenced on the 27th of January, 1785. During this he was more attentive than at the preceding session, but governed by the same system of policy, acting only when great and important questions were under consideration. On the 14th of February a joint committee of the two houses was appointed to revise the laws of the state. Colonel Burr was chairman of the committee on the part of the house. He introduced, on leave granted him, several important bills. One in relation to the public lands, another relative to the titles to real estate, &c. On the 25th of February a bill was pending for the gradual abolition of slavery within the State of New-York. It provided that all born after its passage should be born free. Burr moved to amend, and proposed to insert a provision, that slavery should be entirely abolished after a day specified. His amendment being lost, he voted for the bill as reported. He was a member of the legislature, and supported the law in 1799, by which, ultimately, slavery within the state was abolished.
The question upon which he took the most prominent part related to an application of some tradesmen and mechanics in the city of New-York for an act of incorporation. The advocates of this bill had united their interest with certain land speculators, and by these means it was supposed both bills might be carried through the legislature. Both, however, failed. Colonel Burr was the only member from the city of New-York that opposed what was termed the Mechanics' Bill. His opposition produced so much feeling and excitement, that a man of less firmness would have been driven from his course. Riots were threatened, and by many it was supposed his house would be assaulted. His friends volunteered their services to protect him, but he declined receiving their aid, averring that he had no fears of any violation of the laws by men who had made such sacrifices as the whigs had made for the right of self-government, and that he could and would protect himself, if, contrary to his expectations, it should become necessary. That he was prepared to resist any attack was universally known, but none was attempted, and perhaps for that reason.