350 Controversy respecting Safety-lampi. 



admitted, was first tried in the Killitigworth A. and B. pit? on 

 Saturday, October 21, 1815; but being found not to burn vvel!, 

 another was ordered the same day, with three capillary tubes to 

 admit the air, and tried in the mine on the Ith of November 

 following, and found to burn considerably better, and to be per- 

 fectly safe. On the IJth of November it waa tried at Killing- 

 worth Office with inflammable air, before Richard Lambert, esij.; 

 and on the 24th of November before II. \V. Brandling, esq., 

 C. .1. Brandling, esq. and Mr, Murray. 



On the 30th of November a lamp was tried in the mine, in 

 which the air was admitted bv means of a double row of SKia'il 

 perforations, and found to be perfectly safe and burn extremely 

 well ; and on the 5th of December it was tried with inflammable 

 air, before the Literary and Philosophical Society of Newcastle- 

 upon-Tyne. 



N. B. The lamp which was tried on the 21st of October was 

 a considerable time in making (a inonth at least), owing to the 

 necessity of having the glass made and well temjjered before the 

 lamp could be begun to be made. 



At an adjourned Meeting of Coal- owners, held the 11th of 

 October ISIG, John George Lambtoxi, esq. M.P. in tlie chair, 

 Mr. William Brandling moved (seconded by Mr. Arthur Mow- 

 bray), that the meeting do adjourn until, by a compa'-i«on of 

 dates and an inquiry into fleets, it shall be ascertained whether 

 the merit of the invention of the safetv-!amp is due to Sir 

 H. Davy or George vStephenson ; and tlie question being put 

 thereon, the same passed in the negative. 



To the Edlldr nf the Newcastle Courant. 



Hiiih Ilev.onh. Octoher 21, 1816. 



Sir, — In answer to the letter and certificates of Mr. Stephen- 

 son, respecting the Killingworth lamp, in your last week's paper, 

 I will thank you to insert the following notices respecting the 

 progressive views and experiments of Sir H. Davy, on the sub- 

 ject of his safetv-lamp. 



On the 2 Sth'of August IS 15, Sir H. Davy told Mr. Fenwick, 

 of Dipton, at Auckland Castie, that he intended introducing a 

 lamp into the coal mines incapable of inflaming the atmosphere 

 surrounding it, and constructed of materials not easily injured. 



Sir H. continued in the north of England till the 29th of 

 September following, on which day he wrote to mc, rc(|uesting 

 me to send him a quantity of fire-damp from a blower. In this 

 letter he says, " I Iiave thought a good deal on the prevention of 

 explosions from fire-damp, and 1 entertain strong hopes of being 

 able to effect something satisfactory on the subject." 



On the 15th of October, he acknowlcged the receipt of the 



fire- 



