4 Indiana University Studies 



PAGE 



VITI. Geound Limestone — 



Use in General 122 



What Soils Need Limestone Dressing 13C 



Test for Soil Acidity 132 



Lime or Crushed Limestone 132 



Amount of Limestone to Use 135 



Cost of Crushing Limestone 135 



IX. Lime — 



Origin and Nature of Limestones and Lime 149 



Lime Burning 154 



Use of Lime 161 



The Hydration of Lime 165 



Sand-Lime Brick 168 



Lime Industry in Southern Indiana 168 



X. Portland Cement — 



History of the Industry 172 



Composition and Nature of Portland Cement 175 



Factors Determining Development 177 



Methods of Manufacture 179 



Cost of Cement Manufacture 181 



XL Crushed Limestone — 



Waste Limestone for Road Metal, Railroad Ballast, and 



Concrete 189 



Waste Limestone as a Flux for Blast Furnaces 191 



Limestone and Lime in the Manufacture of Glass 194 



Limestone in the LeBlanc Process of Soda Manufacture 195 



Limestone in the Solvay Process of Soda Manufacture 198 



Carbon Dioxide Recovery in the Manufacture of Lime 197 



Limestone and Lead Smelting 198 



Bibliography 199 



PLOTS 



Plot 1. Approximate cost of engines 89 



Plot 2. Approximate cost of boilers 72 



Plot 3. Approximate cost of gas-producers and engines 100 



Plot 4. Approximate fuel consumption of different types of power- 

 producing equipment 86 



Plot 5. Fuel cost of different types of equipment 82 



Plot 6. Relative effioiency of different types of power equipment 112 . 



Plot 7. Relative total cost of power with different types of equip- 

 ment V Ill 



