Two papers by William Rowan Hamilton, containing theorems on the inscription of ``gauche'' polygons in surfaces of the second order, were published in volume 4 of the Proceedings of the Royal Irish Academy.

A paper by Hamilton entitled

was published in volume 4 of the Proceedings of the Royal Irish Academy (1850), pp. 380-387.On some Results obtained by the Quaternion Analysis respecting the inscription of ``gauche Polygons in Surfaces of the Second Order

This paper is available in the following formats:

A paper by Hamilton entitled

was published in volume 4 of the Proceedings of the Royal Irish Academy (1850), pp. 541-557.On ``Gauche'' Polygons in Central Surfaces of the Second Order

This paper is available in the following formats:

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D.R. Wilkins(

School of Mathematics

Trinity College, Dublin