THE first edition of this essay has been out of print for some time, but apparently some demand for it continues. I have therefore taken advantage of the publisher's decision to reprint to introduce certain alterations and improvements which experience since it was first written seemed to make desirable. | An Essay on the Nature and Significance of Economic Science Lionel Robbins AN ESSAY ON THE NATURE SIGNIFICANCE OF ECONOMIC SCIENCE BY LIONEL ROBBINS Professor of Economics in the University of London Second Edition Revised and Extended MACMILLAN AND co. LIMITED ST. MARTIN S STREET LONDON 1945 COPYRIGHT First Edition 1932 Second Edition 1935 ỉteprtnted 1937 1940 and 1945 PRINTED TN GREAT .