| http://www.w3.org/ns/prov#value | - He refers to the shell of the boiler, which he says is more especially intended to be used for that class of engines employed in threshing and other field-work where there is straw or other light material enough for fuel, but which has never been satisfactorily butned without an artificial draft or blast, and which has always been dangerous by reason of the sparks thrown out, on account of incompl
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