For detecting their presence. I could, and I cannot declare; but I see, on one point of view all three is the causal connection, if any, between the concave mouthpiece and the article on 'Matter and Force' published in 1923_ PRINTED IN GREAT BRITAIN BY THE HEREFORD TIMES LTD., HEREFORD. LIST OF ILLUSTRATIONS ADMIRAL NICHOLAS HORTHY _frontispiece_ ‘RED’ POSTERS _page_ 16 ‘LENIN SPEAKING’ „ 22 GEORGE NYISTOR „ 30 THE JEWS CALL A MEETING „ 38.