THE FLUID COMPONENTS OF PLANTS. 249 



42.23 of carbon, 



6.93 of hydrogen, and 

 50.84 of oxygen, the oxygen and hydrogen being 

 nearly in the same relative proportions as 



100.00 contained in water. 



100 parts of common resin consist of 



75.944 of carbon, 



1 5. 1 5o of a combination of oxygen and hydrogen in the 

 same proportions as they exist in water, and 

 8.900 of hydrogen in excess. 



100.00 



1 00 parts of olive oil consist of 



77.213 of carbon, 



10.712 oxygen and hydrogen, as in water, and 



12.075 of hydrogen in excess. 



100.00 



The solids, also, except the earths and salts, are 

 formed, from the same principles. 100 parts of the 

 ligneous fibre of the Beech and the Oak, for exam- 

 ple, consist of 



Beech. Oak. 



Carbon 51.45 52.53 



Oxygen 42.73 41 78 



Hydrogen 5.82 5.69 



100.00 100.00 



and thus almost the whole of vegetable matter may 

 be resolved into these three simple elements. 



Such are the general components of vegetables. 



