796 PKOCEEDINGS OF THE SOCIETY. 



A Fellow asked if a glass rod like that would work well with an 

 arc lamp, because when used for photography a very little variation 

 in the light from the arc would upset the process. 



Mr. Beck said he had tried the lamp with an incandescent mantle 

 and found it work very well, and he thought it would also work well 

 with an arc lamp ; the only thing in that case would be the question of 

 heat. The object of the curved rods which had been referred to was to 

 convey the light under or over the object. Mr. Gordon did not claim 

 any originality for the principle, but the object originally aimed at was 

 the conveyance of the light round a corner. 



Mr. Taverner asked if there was any limit to the length of the glass 

 rod to be used. 



Mr. Beck thought that probably the rod should be as short as 

 possible, because the absorption of light by glass was very considerable. 



Mr. Orfeur said that when Mr. Gordon showed the lamp at the 

 Meeting of the " Brass and Glass Section " he suggested that the length 

 of the rods should be from 4 to 5 inches. 



The Chairman said that although Mr. Gordon had, he believed, 

 devised this lamp in the first place entirely himself, still he soon 

 discovered his invention had been anticipated, as already explained, and 

 he quite acknowledged it, although, of course — as Mr. Gordon rightly 

 said — his suggestion embodied improvements that did not exist in the 

 arrangement previously designed. 



Mr. Heron-Allen asked if it could be used upon an opaque object. 



Mr. Beck said Mr. Gordon had asked them to make a rather more 

 elaborate lamp than the one before the Meeting, and he hoped to be 

 able to show this at the next Meeting of the Society. A curved rod 

 would enable opaque objects to be illuminated by it. 



The thanks of the Society were specially voted to Mr. Gordon for 

 his donation. 



The Diploma of Honour awarded to the Society for their exhibit 

 at the Franco-British Exhibition was exhibited to the Meeting by 

 Dr. Hebb. 



The Chairman said he was sorry to have to announce that, in con- 

 sequence of what occurred at the Special Meeting of the Society in June 

 last, Mr. Gordon had sent in his resignation as a Fellow. He (the Chair- 

 man) said he felt sure that all present would receive this notice with 

 regret, because Mr. Gordon's papers had certainly stirred up the Society 

 and induced much discussion ; and although perhaps he, with several 

 others, could not personally agree with all the conclusions arrived at or 

 some of the opinions expressed, still no one present, he felt positive, 

 entertained anything approaching ill-feeling towards the author on that 

 account — anyhow, if they did, they ought not to, he felt equally certain. 

 This made it all the more a pity that Mr. Gordon should have looked 

 upon the opinions expressed at the last Meeting in so grave a way, 

 and allowed them to induce him in consequence to act in so heroic 

 a manner : this was especially to be regretted as it was common know- 

 ledge that no one usually met his opponents in a more generous and 

 courteous manner than did Mr. Gordon on all previous occasions. No 



