By using a photographic method in connection with semi-circular focusing magnetic spectrometers, the beta-spectra due to internal conversion have been evaluated for gold 198, iridium 194, and tantalum 182. For gold a simple spectrum of 3 lines with differences the same as between the $K-L-M$ levels of mercury indicate a single gamma-ray of energy 0.408 Mev following beta-emission.

In iridium, a complicated spectrum of more than 26 lines is observed which may be identified from the $K-L-M$ differences in platinum as due to 12 gamma-rays. These gamma-energies appear to fit well with a level scheme of six terms.

Tantalum yields a spectrum of about 34 lines from which about 16 gamma-rays may be derived by applying the $K-L-M$ differences for tungsten. These gamma-energies fit satisfactorily on a level scheme of 9 terms.

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