A letter to Thomas Trotter, M.D : occasioned by his proposal for destroying the fire and choak damps of coal mines : containing chemical and general strictures on that work / by Henry Dewar.

  • Dewar, Henry, 1780-1823.
Date:
[between 1800 and 1899?]
Catalogue details

Licence: Public Domain Mark

Credit: A letter to Thomas Trotter, M.D : occasioned by his proposal for destroying the fire and choak damps of coal mines : containing chemical and general strictures on that work / by Henry Dewar. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    attention of the world to the subject would be entitled to praise. It might however be expected that any author who undertook the task should previ- ously inform himself respecting the present state of coal mines, and collect the various facts relating to the formation and accumula- tion of noxious airs. It might also be ex- pected that he should be fully acquainted with those parts of chemical and general science which are connected with his subject. The application of chemical principles in explain- ing the phenomena, ought to exhibit that precise degree of certainty which the present state of chemistry authorizes ; and speculative opinions, if introduced at all, ought to be delivered with a diffidence which would teach the reader to distinguish them from esta- blished principles. If chemical agents are proposed for remedying the evil, they should be fully investigated, not only in their action on the fire and choak damp, but in every other property which can affect the safety of the pitmen and the success of their labours. a 3 lam