Aberdeen Sea Outfall Admiralty, Diving Regulations of --Charts, Datums for Soundings on --Main Currents Shown on Age of Tide Air Pressure on Tides, Effect of Almanac, Nautical Analysis of Cement --Sea Water Anchor Bolts for Sea Outfalls Anemometer for Measuring Wind Aphelion Apogee Atlantic Ocean, Tides in Autumnal Equinox Barometric Pressure, Effect on Tides of Beach Material, Use in Concrete of Beaufort Scale for Wind Bench Mark for Tide Gauge "Bird" Tides Board of Trade, Approval of Outfall by Bolts for Sea Outfall Pipes Box Sextant Bristol Channel --Datum for Tides at Buoy for Marking Position of Outfall Can Buoy to Mark Position of Outfall Cast Iron, Resistance to Sea Water of Cement, Action of Sea Water on --Analysis of --Characteristics Causing Hardening of --Setting of --Effect of Saline Matters on Strength of --Sea Water on Setting Time of --Physical Changes Due to Action of Sea Water on --Precautions in Marine Use of --Retardation of Setting Time of --Tests for Marine Use of Centrifugal Force, Effect on Tides of Centripetal Force, Effect on Tides of --Variations in Intensity of Charts, Datum for Soundings on --Main Currents Shown on Chepstow, Greatest Tide at Clifton, Tides at Compass, Magnetic Variation --Marine --Prismatic Concentration of Storm Water in Sewers Concrete, Action of Sea Water on --Composition to Withstand Sea Water --Destruction in Sea Water of Crown, Foreshore owned by Currents and Tides. Lack of co-ordination in change of --Formation of --in Rivers, 30 --Observations of --Variation of Surface and Deep --Variations in Velocity of Current Observations by Marine Compass --Theodolites --Floats for --Hydrographical Surveying for --Method of making --Plotting on Plans, The --Selecting Stations for --Special points for consideration in making --Suitable Boat for --Trigonometrical Surveying for Datum Levels for Tides Declination of Sun and Moon Decompression after Diving Density of Sea Water Derivative Waves Design of Schemes, Conditions governing Diffusion of Sewage in Sea Discharge from Sea Outfalls, Calculations for --Precautions necessary for --Time of Disposal of Sewage by Diffusion --dependent on time of Discharge Diurnal Inequality of Tides Diverting-plate Storm Overflow Diving --Illnesses caused by --Instruction in --Medical Examination previous to --Physical Principles involved in --Equipment Diving Equipment, Weight of Dublin, Datum for Tides at Earth, Distance from Moon --Sun --Orbit around Sun of --Size of --Time and Speed of Revolution of Equinox Erosion of Shore caused by Sea Outfalls Establishment Flap Valves on Sea Outfall Pipes Floats, Deep and Surface --to govern Pumping Plant Foreshore owned by Crown Gauges, Measuring flow over Weirs by Gauging flow of Sewage --, Formula: for Gradient, Effect on Currents of Surface --Tides of Barometric Gravity, Specific, of Sea Water --Tides caused by