A large amount of experimental work has been done to show an effect of chemical combination on X-ray absorption edges. After the first attempt of Wentzel, Kossel and others, and still more recently Pauling, have tried to explain the effect; but at the present time it remains far from being clearly understood. The question must be attacked from the side of the emission spectrum also. About the year 1923 Lindh and Lundquist in Professor seigbahn's laboratory at Lund showed an influence of chemical combination on the wave-lengths and structure of the β lines of phosphorus, sulphur and chlorine. Later Bäcklin and Ray showed an effect of chemical combination on the Kα doublet of some light elements. Most surprising shifts in the positions of the components of the doublet were then observed. Recently Lundquist has studied the Kβ group of sulphur in different chemical compounds of this element. This author finds that no other line except β1 and βx is emitted by any of the compounds. It is interesting to note that Hjalmar has definitely listed a third line β3 for sulphur. The following investigation was therefore taken up to clarify this point. As will be seen, some interesting facts regarding this question have been brought to light.