xxil CONTENTS. 



PACT 



Electrolysis Indestructibility of Force Various Modes dis- 

 covered of Decomposing Substances John Dalton, chemist 

 Law of Definite Proportions Law of Multiple Proportions 

 Dalton's Atomic Theory The Study of Organic Chemistry 

 Liebig, the great teacher in Organic Chemistry . . . 362 



CHAPTER XXXVII. 



SCIENCE OF THE NINETEENTH CENTURY (CONTINUED). 



The Organic Sciences are too difficult to follow out in detail 

 Jussieu's Natural System of Plants Goethe proves the Meta- 

 morphosis of Plants Humboldt studies the Lines of Average 

 Temperature on the Globe Extends our knowledge of Physical 

 Geography Writes the 'Cosmos' Death of Humboldt in 

 1858 . . . . . . . . . . 380 



CHAPTER XXXVIII. 



SCIENCE OF THE NINETEENTH CENTURY (CONTINUED). 



The three Naturalists, Lamarck, Cuvier, and Geoffrey St.-Hilaire 

 Cuvier begins the Museum of Comparative Anatomy La- 

 marck's History of Invertebrate Animals G. St.-Hilaire brings 

 Natural History Collections from Egypt Lamarck on the 

 Development of Animals G. St.-Hilaire on * Homology,' or 

 the similarity in the parts of different animals Cuvier's ' Regne 

 Animal' and his Classification of Animals Cuvier on the Per- 

 fect Agreement between the Different Parts of an animal He 

 Studies and Restores the Remains of Fossil Animals His 

 ' Ossemens Fossiles ' Death of Cuvier Von Baer on the Study 

 of Embryology His History of the Development of Animals, 

 1828 . ... . . . . . . . 388 



CHAPTER XXXIX. 



SCIENCE OF THE NINETEENTH CENTURY (CONTINUED). 



Prejudices which retarded the study of Geology Sir Charles 

 Lyell traces out the Changes going on now Mud carried down 

 by the Ganges Eating away of Sea-coasts Eruption of Skap- 

 tar Jokul Earthquake of Calabria Rise and Fall of Laud 



