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N writing the following paper, the author has taken full advantage of the various publications dealing with the subject, and desires to mention the progress reports of the New Zealand Geological Survey (Sir Jas. Hector, K.C.M.G., F.R.S., Director); the "Geology of Otago," by Profs. Hutton and Ulrich, and several papers in the Transactions of the New Zealand Institute.

For convenience of reference, the subject is divided as follows:—

 Introduction and sketch of geological structure. Economic geology. Soil. Coal and oil shales. Sand. Clays. Building and ornamental stones, including cements. <li>Gold.</li></ol> <li>Minerals.</li> <li>Appendix.</li></ol>

It is possible that while to the casual observer the geology of the neighbourhood of Dunedin might not prove so interesting as that of many other portions of the colony, still, for the general student, there are many instances of geological phenomena which would rivet the attention, and furnish ample food for reflection.