| Description | Present: Sir Richard Glazebrook in the chair; Admiral Sir Henry Jacksoon, Secretary; Professor W H Eccles; Sir Joseph Petavel; Sir Arthur Schuster; Mr F E Smith; Professor J S Townsend; Professor E V Appleton; Mr D W Dye; Professor C L Fortescue; Mr J Hollingworth; Dr J R Erskine Murray; Dr J Robinson; Mr E H Shaughnessy; Dr R L Smith-Rose; Mr R A Watson-Watt
Apologies for absence; Dr G S Simpson
1. Read and confirmed minutes of last meeting
2. ' The Committee approved the action of the Chairman with regard to the circulation of the Reports for Commission II and Commission III
3. The nomenclature of the upper layer of the atmosphere which causes refraction of waves used in Radio - Telegraphy was very fully discussed, and it was agreed that in papers by the National Committee a scientific term should be used to describe this layer in preference to using personal names.
4. With regard to the work done for Commission I Mr Dye agreed to have his report prepared by the end of the year, when it should be referred to Professor Townsend, Professor Fortescue, and Dr Erskine Murray for their concurrence. If agreed to the Chairman should authorise its publication without further reference to the main Committee
5. The matters which should be brought before the next meeting of the International Union of Scientific Radio-Telegraphy were then discussed, the American proposals being considered in this connexion. The subjoined matters were approved in the following order of precedence;
5a International intercomparison of frequence and other R.F. standards
5b International intercomparison of field intensity measurement apparatus and results, and the measurement of the radiation of very short waves.
5c Wave polarization. (Profesosr Appleton and Mr Hollingworth will contribute results of experiments to the Committee).
5d Interfering radiation. (Professor Eccles, Professor Appleton, and Mr Watson-Watt will contribute results of experiments on atmospheric interference; and Professor Appleton, Mr Hollingworth, and Dr Smith-Rose on interference due to reflected waves from the upper ionised layer of the atmosphere).
5e Apparent variations of directions of waves of various wave lengths in the passage through the atmosphere. (Dr Smith-Rose will contribute results of experiments to the Committee).
5f To suggest that the International Union of Scientific Radio-Telegraphy undertake assembly and distibution of the schedules of transmission of stations using waves of 3,000 kilocycles and above.
5g To discuss methods of measuring decrement and intefering properties of telephone and C W Stations
5h To discuss means of measuring apparent velocity of electro-magnetic waves at various frequencies over great distances.
6. It was agreed that the Secretary be directed to inform the Secretary-General at Brussels of the above proposals and also that it is proposed to discontinue the U.R.S.I. signals from Leafield on December 1st, 1926, as it is not now convenient to carry on these signals, the wave length of that station having been changed and the traffic greatly increased.
7. The attendance of members of the Committee at the Conference of the Interantional Union of Scientific Radio-Telegraphy at Washington was discussed and it was provisionally agreed that Mr Shaughnessy and two members representing the National Physical Laboratory and the Radio Research Board should attend, together with other members who could find it convenient to do so when the exact date of the Conference is finally settled. It was also agreed that another meeting of the Committee would be necessary when this date was known definitely.
8. It was agreed that copies of General Ferrie's letter of June 30, 1926, should be sent to the Astronomical observatories at Greenwich, Oxford, Cambridge, Edinburgh, and Dublin, with a request that if any of the observations suggested in that letter could be carried out at these observatories, the Committee would be obliged if they could be informed of the results obrained.
Mr Hollingworth and Mr Watson-Watt stated that they hoped to be able to take some fo the observations suggested during November of this year. '
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