The Mapping of Large Areas of Unsurveyed Country: Discussion by Jones, B. Melvill, Learmonth, Admiral, Winterbotham, Colonel, Thomas, Hamshaw, Crosthwait, Colonel

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Air Survey and Archæology: Discussion by Dr. Williams-Freeman, Close, Charles, Curwen, Eliot, Winterbotham, Colonel, Crawford, O. G. S.

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The Influence of Man as an Agent in Geographical Change: Discussion by Gleichen, Edward, Lamplugh, G. W., Mr. Hinks, Winterbotham, Colonel, Mr. Bromehead, Lunn, William, Sherlock, R. L.

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Lettering on Maps: Discussion by Goodenough, William, Winterbotham, Colonel, Jack, E. M., Mr. Reeves, Mr. Hinks, Walker, Emery, Boulnois, Major, Withycombe, J. G., Fawcett, Professor

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The Grid in Civil Use: Discussion by The Earl of Ronaldshay, Close, Charles, John T. Burnett Stuart, G. S. Laird Clowes, Pirrie, F. W., Winterbotham, Colonel

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The Proposed Determination of Primary Longitudes by International Co-Operation: Discussion by The Earl of Ronaldshay, Dyson, Frank, Close, Charles, Learmonth, F. C., Winterbotham, Colonel, Mr. Jolly, McCaw, G. T., Mr. Hinks, Dr. Evans, Learmonth, Admiral, Lenox-Conyngham, Gerald, Gleichen, Edward

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The Use of the New Grid on Ordnance Survey Maps: Discussion by Goodenough, William, MacLeod, Colonel, McCaw, G. T., Hinks, A. R., H. St J. L. Winterbotham

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British Survey on the Western Front: Discussion by Close, Charles, Lieut.-Colonel Jack, Lieut.-Colonel Keeling, Salmon, Colonel, McCaw, Captain, Jones, Captain, Simonds, C. B., Winterbotham, H. S. L.

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German War Maps and Survey: Discussion by Winterbotham, H. S. L., Lieut.-Colonel Salmon, Mr. Burgess

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The Projection of the Sphere on the Circumscribed Cube: Discussion by Burrard, Sidney, Jack, E. M., Close, Charles, Hinks, Arthur R., Dr. Evans, H. St. J. Winterbotham, Wolff, A. J., Tandy, Colonel, Mr. Reeves, McCaw, G. T.

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