Railway and Locomotive Engineering . ion inroundhouse work by the use of the brickarch, while the marked improvement indesigns, especially in the matter of usinwsmaller sections of brick makes the appli-cation and repair of the device compara-tively easy of accomplishment. K\V TllKiircll HOOK. cure the impossibility of any tendency to apossible withdrawing of the flue. Inregard to this tendency to accident whichis common to all mechanical devices sub-ject to high pressures, it may be statedthat there were tubes of this kindin use in 191-4, and 12 accidents were re-ported, 6 of
Railway and Locomotive Engineering . ion inroundhouse work by the use of the brickarch, while the marked improvement indesigns, especially in the matter of usinwsmaller sections of brick makes the appli-cation and repair of the device compara-tively easy of accomplishment. K\V TllKiircll HOOK. cure the impossibility of any tendency to apossible withdrawing of the flue. Inregard to this tendency to accident whichis common to all mechanical devices sub-ject to high pressures, it may be statedthat there were tubes of this kindin use in 191-4, and 12 accidents were re-ported, 6 of which were due to improperapplication, 3 to negligence in cleaning. a straight firebox. It has the quality ofholding the particles of coal and coal dustuntil they can be burned, thereby increas-ing the efiiciency of the evaporating sur-face. Its efficiency, as we already pointedout. increases as the rate of combustion,or as the amount of coal burned persquare foot of grate per hour, burning 30 pounds of coal per hour. (;^I^?ES FURNArE .\Nn COMIilTSTION CIIXMBKR .M.\ IDEAL ARRANGEMENTFOR LOCOMOTIVES IN LIEU OF BARREL COMBUSTION CHAMBER. and 3 due to faulty material, so that if we may expect an increased efiiciency ofthe application and cleaning had been 3 per cent., and when burning 100 pounds properly attended to only 3 arch tube failures would have been reported in one year. Coming to the question of efficiency as saving device which in the last analysis Progress and Principle. Progress is based upon principle, notupon policy; it moves forward, neverbackwards, always towards the right andagainst the wrong. It does not necessarilymean peace, but will involve conflict onlywhen that is imperative. It is the sur-vival of the fittest, not so much in manspower over nature, but through the powerof principle in his control of sell and hisinfluence over his fellows. Ignorance andselfishness will antagonize and may tem-porarily impede the triumph of this fun-
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