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The recent suggestion of Chen that the diffused hands appearing on the short wave-longth side of the principal series lines of the alkali atoms in the presonce of foreign gases are due to the increase ia the energy of the optical electron in the npper state through colliaiona with a foreign atom is examined. Serious objections enoountered in this theory are pointed out in this note.

ABSORPTION BANDS OF ALKALI ATOMS IN THE PRESENCE OF FOREIGN GASES:REMARKS ON CHEN'S RAPER ~1