There are besides the above a great variety of other papers on public affairs among his MSS., and it is stated that he left " An Inquiry into the operation of Intellect among Animals" -- a piece of great originality; another, "On thp Essential properties of Light;" "An Introduction to the Study of Physic," in form of instructions to one of his grandsons and dated in the 81st year of his age; and «'An Inquiry into the causes producing the phenomenon of Metal medley swimming in water," but of the condition of these MSS. we have had no opportunity of judging. A Biographical Sketch of Dr. Colden by Dr. Francis is to be found in the American Med. Reg.; another attributed to the Hon. G. Verplanck, in the Monthly Recorder; and a third in Eager's Hist, of Orange Co. Allen's Biog. Diet, and Rees' Encyclopsed. also have articles on the same subject. It is to be hoped that the public will yet be furnished with a more ample account of the character, studies and public services of a man who acted so distinguished a part in the History of New York from 1720 to 1776.

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834 PAPERS RELATING TO THE

PETITION OF PETRUS PULVER & OTHERS DEMANDING AN INVESTIGATION INTO THE LIVINGSTON'S TITLE.

To the Honorable the Legislature of the State of New York in Senate and Assembly Convened The Petition of the Subscribers Inhabitants of the Town of Livingston in the County of Columbia Hctvibly Shevveth