Abstract
In accordance with the intimation given in my First Part of a Memoir upon the Oolites of Northamptonshire, I now beg to offer the Second Part of that Memoir. The limited district of which I treated on the former occasion afforded facilities for its division into four areas, and for describing the beds and the order of their superposition in each; and thus, by a comparison of the beds and their sequence in the several areas, for arriving at a right understanding as to the geology of the whole district. The field to which I now direct attention is much more extended, and is of a character that will not allow of such a systematic division. I hope, nevertheless, to be able to convey clearly that which I have to communicate. The main feature of my First Part was the description and consideration of that formation, commercially most valuable, and geologically most interesting, the Northampton Sand. The main feature of my Second Part will be the description and consideration of a series of beds grouped by Mr. Judd under the name of the “Lincolnshire Limestone”—of less commercial value than the former, it is true, but scarcely of less geological interest. My endeavour has been to trace, through the county in a north-easterly direction, to Stamford and somewhat beyond, the continuity of beds occurring in the Northampton district; to describe the Oolitic beds and their sequence at certain points within the area considered (involving the interposition of a new and important

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