Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 375
supply of water that is used in a boilerconsists, almost invariably, of a mixture of surface water and of groundwater. That is, some portions of it have probably been down to aconsiderable depth and have been in contact with lime rocks andmagnesia rocks for a considerable time; while other parts… … IQQ THE LOCOMOTIVE. [October, depend to a large extent upon the proportion in which the water from the deeper regions of the ground, and that from the surface or from the superficial layers of the soil, are mingled. Now it is evident that this proportion will vary a great deal with the amount of…
Locomotives · Steam-boiler explosions
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