...the author, meet the difficulty. ' There is no method known to physical science,' says Mr. Stallo, ' which enables it to renounce the assumption of the...elasticity of the particles whereof ponderable bodies are said to be composed, however clearly this assumption conflicts with one of the essential requirements...

...Secchi. This attempted solution of the difficulty Stallo examines and rejects, observing finally : — The difficulty, then, appears to be inherent and insoluble....renounce the assumption of the perfect elasticity of (he absolute simplicity, it meets with an equally I particlts whereof ponderable bodies and their signal...

...in review the most notable efforts made in this direction, he reaches the following conclusion : " The difficulty, then, appears to be inherent and insoluble....essential requirements of the mechanical theory." 1 Again, according to the mechanical theory, motion, like mass, is indestructible and unchangeable...

...in review the most notable efforts made in this direction, he reaches the following conclusion : " The difficulty, then, appears to be inherent and insoluble....of the perfect elasticity of the particles whereof ponderahle bodies and their hypothetical imponderable envelopes are said to be composed, however clearly...

...matter is in conflict with the doctrine of the conservation of energy, unless the atoms or molecules are assumed to be perfectly elastic. ' We are forbidden,'...however, to see that the assumption of perfect hardness anil perfect rigidity in the ultimate particles of the ether may be regarded as identical with perfect...