PSYCHOLOGICAL SCIENCE 93 



Unlike natural science, metaphysics has yielded 

 no general agreement in results. Perhaps no definite 

 and certain results are possible, and the meta- 

 physician may be obliged to remain for ever upheld 

 by the conviction that it is better to learn how to 

 frame aright questions of high dignity and import, 

 than to solve successfully the lowlier problems of 

 natural science. 



BIBLIOGRAPHY 1 



The Grammar of Science (Karl Pearson : A. & C. Black, 

 7s. 6d.), and Science and Hypothesis (Henri Poincare ; 

 Translation : Scott, 3s. 6d.), are two treatises on the 

 philosophy of science. The Preface to An Introduction 

 to the Theory of Optics (A. Schuster : Arnold, 15s. net) 

 is valuable as a general comment upon the limits of 

 scientific progress. These may be read for their treat- 

 ment of science in general. 



The Recent Development of Physical Science (W. C. D. 

 Whetham : Murray, 5s.), gives a description of modern 

 work in physics suitable for the general reader. The 

 Science of Life (J. A. Thomson : Blackie, 2s. 6d.), an 

 historical account of the development of biology. 



An introduction to the various branches of science 

 mentioned in this work will be found among " The 

 People's Books," each volume of which has been specially 

 written to be of use to general readers, and contains a 

 guide to further reading. 



1 This list of books has been drawn up by the editor of " The 

 People's Books." 



