CONTENTS vil 



CHAPTER XXIII 



PAGE 



TRANSPORTATION OF THE DEBRIS. CONVEYORS, BARGES, ELEVATORS 185 



CHAPTER XXIV 

 METHODS AND COSTS OF RIVER DREDGES 204 



CHAPTER XXV 

 DREDGING FOR METALS 217 



CHAPTER XXVI 

 DREDGING FOR INDUSTRIAL PURPOSES % 233 



CHAPTER XXVII 

 DRY-LAND DREDGING 245 



CHAPTER XXVIII 

 THE COST OF OPERATING DREDGES 253 



CHAPTER XXIX 

 COST DATA. . . 260 



