Changes produced in Matter by Electric Waves.
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tiveness of the constituent varieties, but to the opposite reactions of A and B balancing each other.
![](//upload.wikimedia.org/wikipedia/commons/thumb/9/9b/ETMC_18a.png/300px-ETMC_18a.png)
Fig. 6.—Curve for Iron.
![](//upload.wikimedia.org/wikipedia/commons/thumb/6/61/ETMC_18b.png/300px-ETMC_18b.png)
Fig. 7.—Curve for Arsenic.
We may now apply some further crucial tests to verify the suppositions made above.