...to enable us to come to the sure conclusion that, on the whole, the steam-syren is, beyond question, the most powerful fog-signal which has hitherto been...noises, such as those of wind, rigging, breaking waves, shore-surf, and the rattle of pebbles have to be overcome. Its density, quality, pitch, and penetration...

...breaking waves, shore surf, paddle-wheels, and the working of engines — have to be contended with, " its density, quality, pitch, and penetration, render it dominant over such noises after all other signal- sounds have succumbed." It is obvious that this power to overcome obstructions is the true...

...and long-continued as to enable us to come to tbe sure conclusion that, on the whole, the steam-siren is the most powerful fog-signal which has hitherto...render it dominant over such noises after all other signal sounds have succumbed. I have not, therefore, hesitated to recommend the introduction of the...

...The Siren. — We now come to the instrument of which Dr. Tyndall says, that " it is beyond question the most powerful fog-signal which ' has hitherto...render it dominant over such noises ' after all other signal sounds have succumbed." If nothing else had been demonstrated in our lengthened investigation,...

...this instrument ; and in 1874 he reported to the Trinity House that the " siren is, beyond question, the most powerful fog-signal which has hitherto been...noises, such as those of wind, rigging, breaking- waves, shore-surf, and the rattle of pebbles, have to be overcome. Its density, quality, pitch, and penetration,...

...breaking waves, shore surf, paddle-wheels, and the working of engines — have to be contended with, "its density, quality, pitch, and penetration, render it dominant over such noises after all other signal sounds have succumbed." It is obvious that this power to overcome obstructions is the true test...

...paddle-wheels, or the working of an engine. This it has to such extent that it has been well said that " its density, quality, pitch, and penetration render it dominant over such noises after all other signal sounds have succumbed." The committee sent in 1872 by *iie British lighthouse establishment,...

...question the most effective fog signal which had hitherto been tried in England. It was especially powerful when local noises, such as those of wind,...breaking waves, shore surf, and the rattle of pebbles had to be overcome. Its density, quality, pitch, and penetrative power rendered it dominant over such...

...and long-continued as to enable us to come to the sure conclusion that, on the whole, the steam-siren is the most powerful fog-signal which has hitherto...noises, such as those of wind, rigging, breaking waves, shore-surf, and the rattle of pebbles, have to be overcome. Its density, quality, pitch, and penetration,...

...as to enable us to come to the sure conclusion that on the whole the steam siren ia beyond question the most powerful fog-signal which has hitherto been...render it dominant over such noises after all other signal sounds have succumbed. I have not, therefore, hesitated to recommend the introduction of the...