CONTENTS. ix 



CHAPTER X. 



PAGE 



Slipways Advantages and disadvantages Inclination of ways Methods of 

 constructing foundations Slipways of ordinary construction Mode of 

 working Slipways to accommodate more than one vessel Hydraulic 

 hauling gear Wire-rope haulage -Stress in hauling Resistance on 

 sliding slipways Broadside slipways 312 



CHAPTER XL 



Pumping water from docks Vertical centrifugal-pumps Horizontal pumps 

 at Liverpool Docks Reciprocating plunger-pumps at Portsmouth Pumps 

 at the Barry Docks Pumps at Bute Docks, Cardiff Pumps at the 

 Hamilton Docks, Malta Temporary pumping 332 



CHAPTER XII. 



Dredging - Class of appliances Grabs Pump-dredgers Bucket-dredgers 

 Stationary dredgers versus seagoing hopper-dredgers Variation of 

 quantities of dredged material as compared with sections Time actually 

 employed in dredging ... 



CHAPTER XIII. 



Destruction of timber Marine worms: Teredo navalttChelttra fercbrans 

 Limnoria terebransThe Lepesma of the West Indies The Xycophago 

 Rate at which the worm will destroy timber Effect of the worm on hard 

 woods Rot in timber Preserving timber : Mechanical means Chemical 

 means Corrosive sublimate Sulphate of copper Chloride of zinc 

 Creosote London oils Country oils Scotch oils Carbolic acid 

 Apparatus used in creosoting Process of croosoting Aitkina' process 

 Hayford's process Charred timber Practice of Eastern Railway of 

 France Practice on New Zealand Railways 344 



CHAPTER XIV. 



Cost of works Cost per acre of water area Cost of locks and docks Cost of 

 quay walls Cost of floating docks Dock gates Cost of caissons Cost 

 of dredging 359 



CHAPTER XV. 



Iron in sea-water Experiments made by Mr. Rennie Experiments made 

 by Mr. Mallet Experiments made by Mr. Thwaite Composition of 

 sea-salts Analysis of sea-water Fixing bolts in masonry Anchor- 

 bolts Experiments made by Mr. Moore Experiments made by Mr. 

 E. F. Miner Holding power of drift-bolts in timber Experiments made 

 by the United States Government Experiments made in connection 



