C. 8. Peirce on Chemical Theory of Interpenetration. 81 
ces. Hence, it must be something inherent in matter and unaf- 
fected by all vibrations. In gases it is proportional to the elasti- 
city, and in elementary bodies generally it is equal to the spe- 
cific heat, which is the elasticity of the medium of heat-vibrations. 
We conclude, then, that the Chemical Intensity is the molecu- 
lar or substantive elasticity. (B. Peirce. ; 
_ When heat expands the body, it is the elasticity which restores 
it. Any motions of vibration in a homogeneous elastic medium 
may be resolved into expansions and contractions. Hence, if 
we assume that heat produces the expansions, this elasticity is 
an active condensing force 
If two bodies interpenetrate it is clear that this force may hold 
ation to one half, unless some other action takes place. Accord- 
ingly we find that wherever there is no condensation there is 
chemical intensity. Hence there is nothing to prevent its com- 
bining with one volume more, &c. This explains the law of 
_% The solid and liquid states result from the action of cohe- 
Sion. Now cohesion is an attraction properly so called and acts 
ata distance, for if it did not it would not vary with the state 
of condensation, Hence it is a force affecting molecules and not 
matter in its continuity. This explains why the above reason- 
pee the recent view that the lines of the spectroscope are only 
Produced by elements in their free state, it will follow that ev- 
ery element except sodium is a mixture of several. We have 
2O Teason to suppose that these are present in 2 meee pro- 
a ae that this consideration gives room for large dis- 
panctes from Prout’s law. 
- Itis observable that tribasic radicles frequently behave like 
a 
Monobasie ones, as N in €,8,(N9.)8 © and in NO, LO» 
aud that monobasic radicles frequently behave like tribasic ones, 
Ax. Jour. Scr—zconp Sznies, VoL. XXXV, No. 108.—Jan., 1963. 
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