68 TENTH ANNUAL REPORT. 
4. Review of “Pflanzen-geographie auf Physiolo- 
gischer Grundlage.” A. F. W. Schimper. 
5. Short notice of smaller papers and local ecological 
works in the United States and in Ohio. 
6. A natural classification of Ohio plants. To be used 
to insure uniformity of expression in the different chapters 
and articles. 
II. PHYSIOGRAPHY OF OHIO. 
1. Geographical position, latitude and longitude, eleva- 
tion. 
i) 
Political map showing counties, railroads, and cities. 
3. General topography. 
4. Topographical map with 200 ft. contour lines. 
5. Glaciated and non-glaciated regions. 
6. Map showing the glaciated region. 
7. Lake and river systems. 
a. Lake Erie region. 
b. Ohio valley region. 
c. Small rivers, creeks, canals, reservoirs, small 
lakes, ponds, and swamps. 
d. Map of lake and river systems. 
8. Sand dunes and fossil lake beaches. 
g. Salt licks and salt springs. 
iit: GENERAL ‘GEOLOGY OF THE STADE: 
I. Geological formations exposed. 
2. Geological map of the state. 
3. Surface rock and soil, as shale, limestone, sandstone, 
clay, alluvium, glacial drift and boulders, sand, and humus. 
4. Surface soil map. 
IV. METEOROLOGY. 
t. Humidity, rainfall, snow, hail, and sleet. 
2. Precipitation tables. 
Sunshine and cloudiness. 
Sky tables. 
Means and extremes of heat and cold. 
nm b&w 
