CONTENTS. 



TAGE 



INTRODUCTION, LISTS OF COMMITTEES, &c. v 



JJIST OF CONTRIBUTORS, WITH ADDRESSES - xxv 



SECTION 1. ARITHMETIC - 1 



2. GEOMETRY - -12 



3. MEASUREMENT - 34 



4. KINEMATICS, STATICS, AND DYNAMICS - 105 



5. MOLECULAR PHYSICS - - 129 



6. SOUND- - 151 



7. LIGHT - - 173 



8. HEAT - - 217 



9. MAGNETISM - - 239 



10. ELECTRICITY - - 257 



11. ASTRONOMY - - 342 



12. APPLIED MECHANICS - - - 381 



13. CHEMISTRY - - 473 



14. METEOROLOGY - 564 



15. GEOGRAPHY - - 604 



16. GEOLOGY AND MINING - 688 



17. MINERALOGY, CRYSTALLOGRAPHY, &c, - 743 



18. BIOLOGY - - - 759 



19. EDUCATIONAL APPLIANCES - - 847 



20. PHOTOGRAPHS, &c., ILLUSTRATING ITALIAN 



SCIENCE - - 886 



j, 21. MISCELLANEOUS - 906 



APPENDIX - - - - - -913 



