274 INDEX. 



Meteor, ...... 125 



Mirage, . . . . . .149 



Mists, . . . . . . 138 



Monsoons, . . . . . .145 



Manganese, . . . . . 159 



Magnesium, . . . . .102 



Magnesia, . . . . . 162 



Marl, ....... 164 



Manures, . . . . ". 190 



Manuring, objects of . . . . .191 



Manures, animal . . . . . 192 



Mineral manures, . . . . .204 



Marl as manure, ..... 208 



Mechanical philosophy, . . . .233 



Machinery, objects of . . . 234 



Machinery, on regulating motion of . .235 



Motion, species of . . . . 236 



Machinery, obstructions to the action of . .237 



Materials, strength of . . . 238 

 Materials, beams and columns .... 238 



Materials, cylinder . . . . 239 



Materials, metals, . . . . . .239 



Materials, woods . . . . . 239 



Materials, stone . . . . .239 



N 



Nitrogen, ...... 45 



Napiform roots, . . . . . 103 



Nerves, . . . . . .111 



Night soil, . . . . . 194 



Nitrate of soda as manure, . . . .205 







Oxygen, ...... 41 



Oxalic acid, . . . . . .48 



Organic bodies, mutual relation of . . 60 

 Oils, fixed ...... 62 



Oils, volatile . . . . . 62 



Organic elements, metamorphosis of . . . 70 



Outcrop, ...... 75 



Olivine, , . . 84 



