I believe no detailed information about the surface-deposits in the neighbourhood of Rugby has been communicated to this or to any Society; and I therefore offer the following observations, which fall under two heads:— (1)The surface-deposits of the high levels. (2)The deposits in the valleys. In the present paper I confine myself strictly to facts for which I hold myself responsible as resting on my own observation, or on information obtained on the spot on which I can rely.