After the abandonment of Manhattan Island by the American army, and
some fighting in Westchester, General Washington crossed the North
river with a part of the troops, and retreated through New-Jersey. The
movements of Lord Cornwallis left no doubt that the object of the
British general was Philadelphia. He advanced rapidly from Brunswick
upon Princeton, hoping, by forced marches, to get in the rear of the
Americans. On the 8th of December, 1776, Washington crossed the
Delaware, secured the boats, and broke down the bridges. Great
apprehension and alarm for the safety of Philadelphia now existed.
Judge Marshall, in his Life of Washington, says,

"In consequence of this state of things, the general advised that
lines of defence should be drawn from the Schuylkill, about the
heights of Springatsbury, eastward to the Delaware, and General Putnam
was ordered to superintend them." Major Burr was now actively engaged
as the aid-de-camp of General Putnam, whose esteem and unbounded
confidence he continued to enjoy. He writes Colonel Ogden,



Princeton, 7th March, 1777.

Dear Matt.,

I this evening received your letter of yesterday's date, by Stockton.
I knew not how to direct to you, nor where to send for the horse, or
should have done it sooner. I do not perfectly recollect the one you
mention, but should be glad of any on your recommendation. Both boots
and a saddle I want much, and shall be obliged to you to procure them
for me;--good leather would suit me as well as boots ready made. I