94 



SCIENCE OF THRESHING. 



TABLE NO. 5. 



conditions, is about as follows: 



The composition of straw in its ordinary air-dried 



100.00 



100.00 



Mean, 



Per cent. 



36.075 



5. 

 38. 



.425 

 4.75 

 15.75 



100.00 



TABLE NO. 6. 



Cord hickory or hard maple weighs 4,500 Tb . equals 2,000 tbs. coal. 



Cord white oak weighs 3,850 Ibs. equals 1,711 Ibs. coal. 



Cord beech, red or black oak weighs 3,20 fbs. equals 1,445 Ibs. coal, 



cord popuar, chestnut or elm weighs 2,350 tbs. equals 1,044 tbs. coal. 



Cord average pine weighs 2,000 Ibs. equals 890 Ibs. coal. 



Ton dr y straw weighs 2,000 Tbs. equals 1,110 Ibs. coal. 



