HAWORTH AND BENNETT.| History of Field Work. 53 
and Upper Coal Measures of the state, based both on paleon- 
tology and stratigraphy, having identified the various fossil 
forms himself and, to a great measure, traced in the field in a 
detailed way the stratified conditions as we now find them. 
Dr. George I. Adams, for a few years after graduation from 
the University of Kansas, gave his time and energies to the 
present University Geological Survey of Kansas. For four 
successive summers he worked partly on the detailed stratig- 
raphy of the Coal Measures and partly on the stratigraphy and 
ground-water conditions of the western part of the state. Af- 
ter leaving the State Survey he joined the United States Geo- 
logical Survey. Either alone or with others he published 
Bulletins 184, 211, and 238. Bulletin 211 is a general review 
of the oil-fields between the Mississippi river and the Rocky 
Mountains, including those of Kansas and Oklahoma. In No. 
211 Doctor Adams gives an elaborate review of methods and 
nomenclature employed by different parties in the Mississippi 
valley, particularly in Kansas and Oklahoma, and later in the 
report reviews the entire system of naming previously sug- 
gested by different members of our State Survey, some of 
which names he adopts and others he replaces by names of his. 
own. Unfortunately, subsequent investigation has shown that 
he was led into error in a number of instances in matters of 
correlation, due to a lack of proper detailed information. Bul- 
letin No. 238, largely written by Doctor Adams, is devoted en- 
tirely to the Iola Quadrangle area. This area was resurveyed 
by the United States Geological Survey, so that an excellent 
topographic map is now available, and the geological and eco- 
nomic features of it were reinvestigated by Adams and others 
in the summer of 1908. 
It is unfortunate to have to record that in the maps of this 
bulletin prepared by Doctor Adams a slight error was made 
in connection with the Chanute shales and Iola limestone, an 
error already corrected by additional field work performed 
jointly by Mr. Millard K. Shaler, of the United States Geolo- 
gical Survey and Rev. John Bennett, of the State Survey,. 
which corrections are herein embodied. 
Dr. J. W. Beede has done a great deal of work in Kansas: 
geology during the last few years. In volume VI of the State 
Survey reports he published a paper on the “Invertebrate 
Paleontology of the Carboniferous of Kansas.” Since that 
date he, in connection with Dr. A. F. Rogers, while working 
