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I am possessed of a great number ofsimilar documents respecting the use andapplication of the lamp; but they are ingeneral so flattering that I might well besuspected of vanity, if they were to be laidbefore the public. It has been said thatthe coal miners have been in many in-stances disinclined to adopt the safety lamp,and that the proprietors of coal mines havenot been always disposed to urge its ap-plication. 1 am anxious that this should becontradicted, for I believe there are no dan-gerous mines in Great Britain where thesafety lamp is not well known, and itsefficacy properly estimated, and it is like-wise getting into general use on the Con-tinent.

It would be expecting too much fromhuman nature to suppose that there shouldbe no instances of obstinacy in workmen,and of prejudice or indifference in coalowners; but these instances have been so-litary ones; and if delicacy did not forbidme, I might bring forward numerous proofsof the gratitude and warm feelings withwhich this invention has been received bythe individuals who have benefited by it. I