Amount ofchloride used .33541 gr.
” ”cadmium found .21559 ”
” ”chlorine ” .11943 ”
Cadmium.Chlorine.
64.27 per cent.35.61 per cent.

These proportions are nearly those of a compound having the composition Cd₄Cl₇, in which the calculated percentages are:

(Foot note). In the paper in the American Chemical Journal XII, 488, which records this work the analyses and percentages were calculated on the basis of the atomic weight of cadmium = 111.7. Although my work since this date has shown that 112.07 is the true value, yet I think it preferable to use the old number here since the changes to be introduced would be very slight and the same results are thereby kept uniform in the two publications.

In order to determine whether the close approximation to definite atomic proportions might not be accidental, the material was reheated with an excess of the metal for twenty hours. The product was analyzed.

Amount ofchloride used 1.45970 gr.
” ”cadmium found .93904 ”
” ”chlorine ” .52329 ”
Cadmium.Chlorine.
64.33 per cent.35.85 per cent.

A second preparation of the substance was made in all respects like the first. Two analyses were made.

First Analysis:

Amount ofchloride used .61010 gr.
” ”cadmium found .39235 ”
” ”chlorine ” .21725 ”
Cadmium.Chlorine.
64.31 per cent.35.61 per cent.

Second Analysis:

Amount ofchloride used .20616 gr.
” ”cadmium found .13266 ”
” ”chlorine ” .07352 ”
Cadmium.Chlorine.
64.35 per cent.35.66 per cent.