5io 



INDEX. 



Penguin, H.M.S, 501-503 

 Pianoforte wire, sounding by, 

 51, 114-115- 337-388 



splicing, 341-343. 354 

 Pilotage, 3, 55-68 

 Polaris, 12, 13, 82, 83 

 Polarity, 244 

 Pole, celestial, 12, 71, 82 



magnetic, 22, 25, 252 



terrestrial, 12, 25 

 Portland, race of, 141 

 Precession of the equinoxes, 



13-17 



Preece, W. H., 400, 401, 419 

 Price Edwards, 394, 421 

 Prime vertical, 70 

 Pyramids and pole-star, 15-17 



Siemens, 352, 366 

 Signalling, 125 



by sound, 395, 420, 421 

 Siren, 131-134, 420, 421 

 Smith, Archibald, 255, 257 

 Solar tides, 149 



Sounding machine, 52, 350, ^51, 

 732-374 



by pianoforte wire, 51, 114, 

 "5, 337-388 



tubes, 381, 382 

 Spring tides, 161, 163 

 Station pointer, 3, 32, 33 

 Steerage, errors in, 108-110 

 Stokes, Sir George, 462, 463, 



481, 488 

 Simmer's method, 87-98 



RADIAN, defined, 20 note, 365 



note 



Rankine, 495 

 Raper, Lieutenant, 44 note, 48, 



49, 10 3 

 Rayleigh, Lord. 462, 463, 481, 



488 



Refraction of light, 78, 102 

 Regulations for preventing col- 

 lisions, 116-125 

 Rescue light, Holmes', 134-138 

 Revolving lights, 395, 396 

 Reynolds, Professor Osborne, 



123, 462, 463, 488 

 Rule of the road, 121 

 Russell, John Scott, 452-478, 



495 



Rust of sounding wire, prevent- 

 ing, 363-365. 378 



SABTNE, Sir Edward, 267, 322, 



323 



Seamanship, I 



Sextant, 3, 4-11, 66, 67, 84, loo 

 Seymour, Admiral Beauchamp, 



366 

 Ship-waves, 450-500 



Terella, 246 



Thompson, Captain, 378 

 Thomson, Professor James, 177, 



365 



Tidal current, the, 140 

 wave, 142 

 analy-is, 209-223 

 Tide gauge, 171, 214-216 



generating force, 154-157, 



1 60, 194-198 

 predicter, 184 

 Tides, declinational, 175 

 defined, 142-144 

 double high and low, 141, 



142 

 early knowledge of, 150- 



153 



effect of atmospheric pres- 

 sure on, 147-149 

 elastic, 198-201 

 equilibrium theory of, 1 60, 



163, 224-227 

 lunar, 150, 154 

 mean solar diurnal, 147 

 meaning both horizontal 

 and vertical motions of 

 water, 140 



