ESSAYS: SCIENTIFIC, POLITICAL, & SPECULATIVE. BY HERBERT SPENCER. LIBRARY EDITION, (otherwise fifth thousand,) _Containing Seven Essays not before Republished,_ _and various other additions_. VOL. II. WILLIAMS AND NORGATE, 14, HENRIETTA STREET, COVENT GARDEN, LONDON; AND 20, SOUTH FREDERICK STREET, EDINBURGH. 1891. LONDON: G. NORMAN AND SON, PRINTERS, HART STREET, COVENT GARDEN. CONTENTS OF VOL. II. PAGE THE GENESIS OF SCIENCE 1 THE CLASSIFICATION OF THE SCIENCES 74 REASONS FOR DISSENTING FROM THE PHILOSOPHY OF M. COMTE 118 ON LAWS IN GENERAL, AND THE ORDER OF THEIR DISCOVERY 145 THE VALUATION OF EVIDENCE 161 WHAT IS ELECTRICITY? 168 MILL _versus_ HAMILTON—THE TEST OF TRUTH 188 REPLIES TO CRITICISMS 218 PROF. GREEN’S EXPLANATIONS 321 THE PHILOSOPHY OF STYLE 333 USE AND BEAUTY 370 THE SOURCES OF ARCHITECTURAL TYPES 375 GRACEFULNESS 381 PERSONAL BEAUTY 387 THE ORIGIN AND FUNCTION OF MUSIC 400 THE PHYSIOLOGY OF LAUGHTER 452 (_For Index, see Volume III._) {1} THE GENESIS OF SCIENCE. [_First published in_ The British Quarterly Review _for July 1854_.]