250 



INDEX. 



Land and water areas, exact bal- 

 ance between, 165. 



Lands suitable for preserving forests 

 on, 15. 



Le Conte, Joseph, extract from 

 " Elements of Geology," 59. 



Lindley, John, extract from his 

 " Botany," 39 to 41. 



Loomis, Elias, extract from " Trea- 

 tise on Meteorology," 152, 153. 



Lyell, Charles, extract from " Prin- 

 ciples of Geology," 69, 87, 114, 



115. 



M. 



Mackenzie River, raft in, 67. 



Malarious diseases produced by de- 

 struction of the forests, 82. 



Man, destruction of forests by, 75, 

 76. 



Marsh, George P., extract from 

 "The Earth as Modified by Hu- 

 man Action," 38, 89, 58, 115, 

 116, 173, 174, 175, 176. 



Matter, organic and inorganic, dis- 

 tinction between, 29. 



Maury, M. F., extract from " Phys- 

 ical Geography," 107, 108. 



Meadows and prairies, peculiar dis- 

 tribution of moisture causing, 43. 



Method, nature's, of distributing 

 plant germs, 32. 



Mice, destruction of forests by, 78. 



Mineral matters, necessity of, for 



plant growth, 25. 

 source of, in plant tissues, 

 23. 



Minerals, plants and animals, mu- 

 tual interdependence between, 

 168. 



Mississippi River, raft in, 67. 



rafts, Lyell on, 69. 

 Moist air of forest, influence of, on 



absorption of heat, 130. 

 Moisture, effect of variations in 

 amount, on character and 

 distribution on flora, 42. 

 how absorbed by plants, 22. 

 of atmosphere, use of, 141. 

 principal food of plants, 22. 

 Mountain rains, how caused, 102. 

 slopes, forests of, 46. 



necessity for preservation 



of forests on, 47. 

 Mountains the birthplaces of rivers, 



47, 103, 104. 

 the natural home of the forest, 



reasons for, 15, 16, 17. 

 the natural home of the rivers, 



16. 



Mud-flats, damages produced by, 84. 

 Mutual interests of forestry associ- 

 ations and lumbermen, 18. 



N. 



Natural drainage, damages pro- 

 duced by the disturbance 

 of, 112. 

 disturbed by destruction 



of forests, 82. 



Nature, balance of, 164 to 173. 

 Necessity for preservation of for- 

 ests on mountain slopes, 47, 

 of germs for the existence of 



plants, 23. 

 of oxygen for growth of plants, 



23. 



New York Forestry Commission, 

 extract from Annual Report of, 

 18, 19. 



