In accordance with the original plans of the Survey, while keeping steadily in view the economic features, the first year of each biennial term is devoted mainly to stratigraphical geology. Therefore the report of the work which has been done in the year just closing will deal largely with the details and descriptions of the different formations over which we have worked, although many very important facts regarding the resources of the regions will also be presented for the first time.

The length of time, however, which must necessarily elapse before the detailed reports of the results of the work of the present year can be prepared and published, and the fact that some of these results are of importance, not only in a scientific point of view, but more especially as affecting the interests of the people of the State, render it necessary to issue this Second Report of Progress. In it are included only such facts as have been definitely determined by the field work since the Second.Annual Report was issued. Many, which are seemingly of equal interest, await further study and the determinations of the laboratory and of the paleontologist before positive statements can be made regarding them.

The first four months of the year were spent in the office, working up the results of the field work of the preceding year. In May and June the parties took the field, under instructions which have been faithfully and efficiently carried out, and which have resulted in securing information of greatest value to the State. The work, as outlined in the instructions given, was intended to furnish material for a