X CONTENTS. 



CHAPTEK IV. 



THE MAJESTY OF THE OCEAN. 



The Immensity of the Ocean Ebb and Flood Causes of the Tides Their In- 

 fluence on the Organic Life of the Seas Ocean Currents How produced 

 Their Importance Evidences of Unity of Design resulting from the intimate Con- 

 nection of the Phenomena of the Seas and the distant Celestial Bodies PAGE 21 



CHAPTEK V. 



THE ATMOSPHERICAL PRECIPITATIONS IN THEIR RELATION TO ORGANIC 

 NATURE. 



The constant Sources of the Eivers The Harmonies of the Ocean and the Atmo- 

 sphere Distribution of Eain and Snow over the Surface of the Globe The Voice 

 of Eivers Dew History of its Formation Clouds and Eain Snow and Ice 

 as Protectors of Vegetable and Animal Life The Lavines The Glaciers The 

 Tornado 27 



CHAPTEE VI. 



THE HARMONIES BETWEEN THE PHYSICAL CONSTITUTION OF THE EARTH AND 

 ITS INHABITANTS. 



The Terrestrial Eevolutions The Formation of Alluvial Plains Beneficial Effects 

 of the Inequalities of the Earth's Surface "What do Petrifactions teach ? Coal 

 Strata The Subterranean Treasuries of Man Influence of the Change of 

 Seasons on Organic Life , , , . ' , , '. 37 



CHAPTEE VII. 



THE CELLULAR CONSTRUCTION OF PLANTS. 



Prodigious Variety of Plants The Vegetable Cell Its Metamorphoses Its 

 Multiplication Eapid Growth of the Lower Plants The Mushrooms The 

 Wonderful Products of the Vegetable Cell Magnificence of the Vegetable 

 World ' . 49 



CHAPTEE VIII. 



THE ROOTS OF PLANTS. 



The Eoots of the Algse, of the Zostera Marina, of the Sand-reed, of the South 

 African Creepers The Eoots of the Forest Trees Aerial Eoots of the Man- 

 groves Their Influence on the Formation of Tropical Delta-lands Eadical 

 Filaments Spongioles Properties of Vegetable Mould The Fertilising In- 

 fluence of Winter ........ 54 



