1892.] Geology and Paleontology. 755 
ington, Madison, Bollinger, Carroll, Chariton and Randolph counties. 
The study of the Quaternary geology of the State has been prosecuted 
in Jackson, Lafayette, Johnson, Macon, Randolph and Saline counties. 
In Greene and Polk counties a small amount of systematic geological 
mapping has been done. The excessive rains during the month 
have not only made all the field work difficult and disagreeable, but 
have made certain work impossible and have materially retarded the 
progress in other directions. It is greatly to the credit of the assist- 
ants of the Survey that, notwithstanding the hardships endured and 
the difficulties overcome, such advance has been made. In the office 
the preparation of reports has been constantly in progress. This 
includes the original composition, the revision and preparation for the 
printer, the correction of proof, the drawing of maps and illustrations. 
The reports which have thus specially received attention during the 
past month are the report on the Iron Ores, the report on the Mineral 
Waters, the report on Palaeontology, the report on the Higginsville 
sheet, the reports on the Warrensburg, Iron Mountain and Mine 
La Motte sheets and the report on the Crystalline Rocks. 
For June the following report is made: 
The excellent weather which has prevailed since the early part of 
the month has much facilitated the progress of work in the field. Zine 
and lead deposits have been examined in Franklin, St. Francois, 
Madison, Washington, Crawford, Jasper, Lawrence and Newton 
counties ; about 110 square miles have, in addition, been mapped in 
detail in Jasper county. Clays have been examined in Adair, 
Randolph, Warren, Montgomery, Audrain, Jackson, Lafayette, Saline, 
Howard, Callaway, and Pike counties. Iron ores have been inspected 
in Mississippi, Dunklin, Scott, Ripley, Butler, Carter, Shannon, Howell, 
Oregon and Ozark counties and the stratigraphy of the country along 
Current river has been studied in connection with these deposits. 
The mapping of the crystalline rocks has been resumed in Wayne, 
Iron and Reynolds counties. The study of the Quaternary formations 
has been prosecuted in Saline, Howard, Boone, Callaway, Montgomery, 
Warren, Ray, Macon and Randolph counties and the terminal line of 
the drift has been traced almost entirely across the State. 
In the office the preparation of the reports on the iron ores, on the 
zine and lead ores and on the paleontology has continued and the 
manuscript of the report on the mineral waters has nearly all been 
transmitted for revision and preparation for the printer; the Higgins- 
