ECONOMIC IMPORTANCE OF GREEN PLANTS 125 



Raw Materials. Besides use as food, green plants have many 

 other uses. Many of our city industries would not be in existence, 

 were it not for certain plant products which furnish the raw ma- 

 terials for many manufacturing industries. Many cities of the 

 east and south, for example, depend upon cotton to give employ- 

 ment to thousands of factory hands. 



Cotton. Of our native plant products cotton is probably of 

 the most importance to the outside world. Over eleven million 

 bales of five hundred pounds each are raised annually. 



COTTON 



ES3 / to 20 bales per square mile 

 W&overZO ... 



-n 



III 



^ 



Cotton Crop in United States Percentage Source 



'10 20 30 40 50 60 70 80 



>M)MJM,sMUSSA ' ' VSWWjrbsnn ' VilliiliilArrrm Irrr 



Georgia 



Miss. Alabama S.Car. Ark. Okla. N.C. La.Oth. 



Sta. 



Cotton Crop in United States Percentage Consumption 



United States 

 North South 



Great Britain & Ireland 



Germany France It. Rest of 



World 



The cotton plant thrives in warm regions. Its commercial 

 importance is gained because the seeds of the fruit have long fila- 

 ments attached to them. Bunches of these filaments, after treat- 

 ment, are easily twisted into threads from which are manufactured 

 cotton cloth, muslin, calico, and cambric. In addition to the 



