282 THE JOURNAL OF GEOLOGY. 



the existence of true chalk deposits in our Cretaceous forma- 

 tion. 



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. Gib- 

 son's account of part of the plateau division. This report also 

 contains the first approximately full columnar section of the meas- 

 ures of this field. In 1891 appeared McCalley's report on the 

 Plateau region of the Warrior Field with map and colored sec- 

 tions. 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 

 CahabaCoal 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 instru- 

 mental surveys for individuals or corporations, all the results of 

 which have been incorporated in his report. The map shows accu- 

 rately 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 mate- 

 rials were pretty thoroughly investigated by Mr. Langdon and 

 myself, to form part of the coastal plain report ; but the holding 



