OF 



THE HUMBOLDT LIBRARY 



■OF- 



IPOIPTJIL,^!^ SOIEIsTGE. 



Price 15 cents a number. Double Numbers, 30 cents. 



No. 1. Light Science for Leisure Hours. A series of familiar essays 



on astronomical and other natural phenomena. By Richaed A. 



Proctor, F.R.A.S. 

 No. 3. Forms of Water in Clouds and Rivers, I«e and Glaciers. (19 illu» 



trations). By John Tyndall, F.R.S. 

 No. 3. Physics and Politicfi. An applicgsfcion of the principles of Natural 



Science to Political Society. By Walter Bagehot, Author of 



"The English Constitution." 

 No. 4. Mean's Place in Nature, {with numerous illustrations). By 



Thomas H. Huxley, F.R.S. 

 No. 5. ^tZwca^ioji, Intellectual, Moral and Physical. By Herbert Spenceb. 

 No. 6. Town Geology. With Appendix on Coral and Coral Reefs. Bj 



Rev. Charles Kingsley. 

 No. 7. The Conservation of Energy, {withnumerous illustrations). By 



Balfour Stewart, LL.D. 



No. 8. The Study of Languages, brought back to its true principles. 

 By C. Marcel. 



No. 9. The Data of Ethics. By Herbert Spencer. 



No. 10. The Theory of Sou^i d in its Relation to Musie, {numerous 



illustrations). By Prof. Pietro Blaserna. 

 No. 11. ) The Naturalist on the River Amaz4>ns. A record of 11 yeaxi? 

 No. 13. ) of travel. By Henry Walter Bates, F.L.S. {Not sold separately). 

 No. 13. Mind and Sody. The theories of their relations. By Alex. 



Bain, LL.D. 

 No. 14. The Wonders of the Meavens, {thirty-two illustrations). By 



Camille Flammariow. 

 No. 15. Longevity. The means of prolonging life after middle age. By 



John Gjvrdner, JI.D. 

 No. 16, The Origin of Species. By Thomas H. Huxley, F.R.S. 

 No. 17. Progress : Its Law and Cause. With other disquisitions. By 



Herbert Spencer. 

 Ho. 18. Lessons in Electricity, {sixty illustrations). By John Tyw. 



DAJLL. F.B.S. 

 No. 19. Familiar Essays on Scientifie Subjects. By Richard A. 



Proctor. 

 No. 20. The Romance of Astronomy. By R. Kalley Miller, M.A. 

 Wo. 21. The Physical Basis of Life, with other essays. By Thomas H. 



Huxley, F.R.S. 

 No. 23. Seeing and Thinking. By William Kingdon Clifford, F.R,S. 

 No. 23. Scientific Sophisms. A review of current theories concerning 



Atoms, Apes and Men. By Samuel Wainw^ight, D.D. 

 No. 24. Popular Scientific Lectures, {illustrated). By Prof. H. Hia.M- 



HOLTZ. 



No . 25. The Origin of Nations. By Prof. Geo. Rawlinson, Oxford Unir. 



No. 26. The Evolutionist at Large. By Grant Allen. 



No. 27. The History of Landholding in England. By Joseph 



Fisher, F.R.H.S. 

 No. 28. Fashion in Deformity, as illustrated in the customs of Barbarous 



and Civilized Races. {Numerous illustrations). By William 



Henry Flower, F.R.S. 



