higher tem- Bituminous coal also makes much smoke, and filled with tubes, arranged as represented, so ag under such circumstances the shell remains the effluvia is such that coal-burning locomo- perature tend to make the tubes longer in that water circulates within, while the heated heated while… … | which are tolerably free from some of the above faults, crackle into fragments under the intense and sudden heat, and by the agi- as that from which the tubes receive their the heating surface is not only more efficient them. The large flue is not continued quite tating motion of the locomotive…
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