bed in the present issue. As an inventorhe sought to avoid mul-tiplicity of mechanicaldevices. Intricacy tohis mind was a failure.He sought to make elec-tricity do its work di-rectly, and all his de-vices were to this end. gliding downward through the air from an eminence,and although they… … THE LATE PROF. ELISHA GRAY. up and down, which has the effect of raising it in avertical direction, and then between the beats it glidesforward, and the constant repetition of this actionproduces forward flight. In the smaller quick-flyingbirds these movements are scarcely discernible, ow.ngto the…
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