A responsible business house in Cincinna- ti has contracted f r the building of a first class packet boat, to run from that city to St. Louis or New Orleans, wWch is to* be propelled by a calori: engine.—mdash;[Exchange. [The above, we are confident, is untrue in every respect. Give us the name of the responsible house. Ifo hot air engine can be built to stemthe Mississippi, or to run in the shallow rivers of Ohio. We have seen many queer paragraphs floating about lately, re specting caloric engines, most of them the work of designing or ignorant men.