How many philosophers, born to great riches, have given them away, that they might not be retarded in their pursuits!

This is best accomplished by an attachment which permits the blowing out of the burners by steam.

The gases available for this class of work are almost invariably very dirty.

The makers furnish a non-drying oil for the liquid, usually a 300 degrees test refined petroleum.

The duration in such cases may be reduced, and the “flying” method of starting and stopping employed.

The other factors entering into such determination are the size of the plant and the character of the feed water.

Special care should be taken to prevent air, steam or water leaks into the boiler or onto the pressure parts to obviate danger of corrosion.

After the walls have become thoroughly heated, coal may be fired and the boiler placed in service.

All surfaces should be painted before the covering is applied. Canvas is ordinarily placed over the covering, held in place by wrought-iron or brass bands.

Napier deduced an approximate formula for the outflow of steam into the atmosphere which checks closely with the figures just given.

The actual transfer rates in superheaters are affected by so many conditions that it has not so far been possible to evolve any formula of practical value.

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