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the existence of true chalk deposits in our Cretaceous formation.

Geological Reports published or in preparation.—Departing from the strict chronological order we shall state briefly the work accomplished and in hand in each of these divisions.

In 1886 was published McCalley's Report on the Warrior Coal Field, containing detailed sections of all the exposures of coal seams in the basin division of this field, together with Mr. Gibson's account of part of the plateau division. This report also contains the first approximately full columnar section of the measures of this field. In 1891 appeared McCalley's report on the Plateau region of the Warrior Field with map and colored sections. Mr. Gibson also contributed to this volume.

Active work has also for the past three years been going on and is still in progress under Mr. McCalley's direction in the Warrior Basin, in locating accurately the surface outcrops of the important coal seams. His examination of the Valley regions and their economic products, including iron ores, limestones, building stones, and bauxites, has been in progress for the past five or six years, and his report thereon is in great part written up.

In 1890 was published Mr. Squire's Report and Map of the Cahaba Coal Field. This document is the outcome of about thirty years' work, during which time Mr. Squire has been continuously engaged in this field either in active mining or in making instrumental surveys for individuals or corporations, all the results of which have been incorporated in his report. The map shows accurately the surface outcrops of all the important seams of coal, and a number of carefully constructed vertical and horizontal sections of the field. It exhibits also the geology of the adjacent valleys, compiled mainly from Mr. McCalley's notes by the present writer, who has also added a description of these formations and a sketch of their accumulation and subsequent history.

In 1884 the existence of phosphatic nodules and marls was discovered. The distribution, quality, and quantity of these materials were pretty thoroughly investigated by Mr. Langdon and myself, to form part of the coastal plain report; but the holding