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gasometer, neither do I think if this had beenthe case that it would have exploded, as everyone knows that carburetted hydrogen gas ex-tinguishes light if unmixed with common air.These are points which ought to be considered ;for, without detracting from the merits of theinventor, it is necessary that plans of this sortshould have some stronger corroboration thanmere superficial and speculative statements.

I am disposed however to give every latitudeto the improvements which may be suggestedby use and experience; and I am happy to un-derstand that, subsequently to its first appear-ance, Mr. Stephenson’s lamp has been muchimproved, and rendered a very desirable andsecure apparatus.

We' come now to a series of inventions bySir Humphry Davy ; and though I feel muchpleasure in recording the experiments andplans of so eminent a philosopher, I cannothelp feeling some regret that they did not ori-ginally emanate under more auspicious cir-cumstances, and free from an appearance ofunmanly assimilations to previous productions.