Mnjic/icster Jlejnoirs, Vol. lvi,{\C)\2), No. 13. 3 



" 6. As their Lordships are aware, the ' Paraboh'c 

 " Reflector,' mentioned in your letter of nth October, 

 " 1875, ^^^■'' iiot fitted on account of the expense ; 

 " but the Dioptric Lens seems, so far as 1 can judge 

 *' (not having seen the Reflector in use), to be all that 

 " is required." 



" 7. With regard to its use for signalh'ng purposes, 

 " it has been used on several occasions, and the flashes 

 " have been shown, both by the vertical ray and also 

 " by obscuring and showing the direct ray of the 

 " light alternately, on the same principle as Colomb's 

 " Flashing Light, under which circumstances it has 

 " been found very useful, as illustrated by the fact that 

 "on the night of the 19th H.M.S. 'Black Prince,' 

 " then distant six, and ' Resistance' four miles, readily 

 "took in a signal directing them to part company and 

 " proceed to Plymouth." 



" 8. I may conclude by saying that this Machine 

 " is a most useful and valuable invention, and that I 

 " should be very sorry to be without it in any 

 " Squadron in which I may have the honour of 

 " serving" 



hi 1882, the search-light was used with striking effect 

 on the fortifications of Alexandria on the night before 

 the bombardment by Sir Beauchamp Seymour, then 

 Commander-in-Chief of the Mediterranean Fleet. 



Following the ordinary course of prime discoveries 

 and inventions, imprcjvements were made (chiefly by 

 foreign inventors) on my dynamo-electric machines and 

 search-light equipment. Several of these improvements 

 were of considerable merit, but could not be used without 

 infringement of m\' patented inventions. Nevertheless, 

 the Admiralty claimed the right, from the exigencies of 



