( 609 ) 
munitions often become very uncertain; some of these mixtures only 
exhibited a sharp end-solidifyingpoint. Still it was generally possible 
to get concordant results on repeating the experiments. 
The subjoined table shows the results of the experiments. 
$ 7. These data represented graphically in Fig. 3 in the usual 
manner show, therefore, that the elements sulphur and tellurium 
when melted together yield, when solidifying, two series of mixed 
crystals of a different crystalline form. The condition diagram is 
that which has been noticed frequently with isodimorphous substances; 
there is a very extended hiatus starting from almost pure sulphur to 
perhaps 27% of sulphur at the side of the trigonal mixed crystals. 
The temperature of the eutectic point E is 106°; the time required 
for solidification, as far as could be ascertained, increases continuously 
with the percentage of sulphur until the pure sulphur is reached. 
The mixed crystals rich in sulphur have a slight ruddy colour; as 
very small amounts of tellurium impart to sulphur an intensely red 
colour, their tellurium content must be small indeed. They exhibit 
the thin needle shaped form of monoclinic sulphur. The transformation 
at 106° may be seen beautifully with the eye in the various melts 
on cooling as well as on warming. The monoclinic mixed crystals 
