A History of the County of Westchester, Vol. I
No. 8 name of Discoverer. In ivhich County. Recorded. Book. Page.
Gilbert Weeks. W. C. Co., town of March 16, 26. 190.
Cortlandt, within a 1796. quarter of a mile of Peekskill landing, on the north side of McGregory's brook silver ore.
Numerous minerals are also found in this neighborhood, such as Epidote, Garnet, &c. Sphene is said to have been discovered near Peekskill in an aggregate of quartz. Sulphate of barytes exists in the region of Anthony's Nose.
Gregory's brook (sometimes called Magrigarie's creek,) rises in Magrigarie's pond, a few miles east of the village. This rapid stream, after flowing through a deep and wooded glen, empties into the Hudson near the landing place.
The romantic hills which abound in the immediate vicinity of Peekskill are many of them connected with stirring events during the revolutionary war. Among the most prominent is Gallows hill, famous as the spot where the spy Palmer was executed by order of General Putnam, whose laconic reply to Sir Henry Clinton, the British commander, deserves an enduring record. It appears that Clinton had sent up a flag of truce from New York, demanding the release of Edmund Palmer, his lieutenant, who had been detected as a spy in the American camp. The brief and emphatic answer of Putnam runs thus:
'' Head Quarters, 7th August, 1777. " Sir : Edmund Palmer, an officer in the enemy's service, was taken as a spy lurking within the American lines. He has been
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