Communication to the American Academy of Arts and Sciences, relative to a late report on ventilators and chimney-tops / by Frederick Emerson. --

By Emerson, Frederick.
Boston : C. Stimpson, 1848 .
12 p., 1 l. : , Deals with only such portions of the report as in the author's judgement do him injustice by attempting to disprove the originality of a ventilator lately invented and patented by him. 21 1/2 cm. --.

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Lesson helps in agricultral geology, for use with Emerson's Agricultural geology (Wiley & sons)

By Smith, John E..
[Ames, Iowa?] 1936 .
48 p. 23 cm..

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Communication to the American Academy of Arts and Sciences, relative to a late report on ventilators and chimney-tops / by Frederick Emerson. --

Lesson helps in agricultral geology, for use with Emerson's Agricultural geology (Wiley & sons)