“ The objects for exhibition,” quoting from a circular issued by the Society, “ and for which prizes will be offered out of the funds now raising, are light engines and machinery, complete working apparatus, models (working and stationary), plans and drawings, articles of interest commemorating previous experiments, kites or other similar apparatus proposed to be used in cases of shipwreck, traction, or in the attainment of other useful ends; paintings of landscapes and cloud scenery observed from a balloon.”