IN connexion with the discussion on dipole moments held by the Faraday Society at Oxford in April 1934, Sir William Bragg described1 briefly the results of a research, which I had been making on the structure of cyanuric triazide. A Fourier analysis of the measured X-ray intensities of (hkio) planes showed the three nitrogen atoms of the azide group to be in a straight line2. Details of the research were promised later and were held up for an absolute intensity determination to be made. The calculations are now completed and will, I hope, be published soon.