this connection it is not necessary to do more 

 than refer to the great part he played in the 

 development of submarine telegraphy, in the 

 improvements he effected in the sounding 

 plummet and the mariner's compass, in the 

 invention of accurate and sensitive instru- 

 ments for electrical measurements, and in the 

 general advancement of electrical engineering. 

 His researches on the tides added greatly to 

 our knowledge, both theoretical and practical, 

 of these important phenomena, and furnished 

 another line of attack on the problem of 

 solving the age of this earth. 



In pure science, by his researches in thermo- 

 dynamics, wave motion and vortex motion, 

 Lord Kelvin advanced greatly human know- 

 ledge of the properties of matter. The whole 

 civilised world recognised him as one of the 

 most brilliant natural philosophers of all time, 

 and now mourns his loss. 



