Wonderful Msehanisp,.


 Sir Everard Homes discovery nf the pneumatic mechanism of the foot of the fly, which enables it to carry on progress i've motion against gravity, led him to ex- plain the peculiarity in the structure of the hind fipper or foot of the wairus. Such is the general resemblance between this Hipper and the foot of the fly. that having seen the former in a very mutiiated state macerating in water, be discovered the similarity of their structure. 1t is curi- ous circumstance that two animals, so dif- ferent in size, should have feet so similar in their use. Tn the fly, the parts require to be niagnified hundred times to repder this structure distinctly visible; and in the waIrus, the parts are 90 large as to require to be reduced to1the sixteenth part of the natural size, to bring them within the com pass off quartO pagsI When the dipper was dissectsd, by depriving 1t of it's thick akin, it lost all appeasance ofa foot, and presented that 0fthe hand of . giant, 50 tal as respected the bones aud muscles. diner