14 CONTENTS 



PAGE 



The Climatologt of Charixjtte Hall 161 



Introductory 161 



The Temperature Conditioxs 164 



Duration of Warm Waves 169 



Duration of Cold Periods 170 



Duration of the Crop Season 172 



Prech'itation 173 



Snowfall 175 



Winds and Weather 176 



THE HYDROGRAPHY OF ST. MARY'S COUNTY. By N. C. Grover 177 



Chaptico Creek 177 



St. Clement River 178 



Mcintosh Run 178 



THE MAGNETIC DECLINATION IN ST. MARY'S COUNTY. By L. A. 



Bauer 179 



Description of Stations 179 



Meridian Line 180 



THE FORESTS OF ST. MARY'S COUNTY. By C. D. Mell 183 



Introductory 183 



Character and Composition 184 



Types of Forest 187 



Valuable Commercial Trees 188 



Transportation 192 



Present Wood Consumption 192 



Sawmills and Their Products 193 



Cordwood 193 



Railway Ties 194 



Pulpwood 195 



Veneers 196 



Telegraph Poles and Piles 196 



Fence Timber and Staves 197 



Destructive Influences 197 



Forest Fires 197 



Grazing 198 



Other Destructive Influences 199 



Future of the Forest under Judicious Management 200 



Summary 203 



INDEX 205 



