Steam Boilers, Engines, Nozzles and Turbines
The proximate analysis of fuel lists

Fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash
Various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as percents by weight
Various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as percents by volume
Fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash

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Steam Boilers, Engines, Nozzles and Turbines
The difference between Cornish boiler and Lancashire boiler is that

Former is water tube type and latter is fire tube type
None of the listed here
Former contains one fire tube and latter contains two fire tubes
Former is fire tube type and latter is water tube type boiler

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