66 



COCONUT CULTIVATION 



hot air is blown in through the channel C, and a 

 smaller current of ordinary air through channel D. 

 The trucks enter the tun- 

 nel at E and leave the 

 tunnel at F at suitable 

 intervals. The trucks are 

 carried forward by an 

 endless chain or other 

 means. The cool air from 

 D saves heat in drying, by 

 withdrawing that from 

 the dried material. 



The curves (Fig. 3) will 

 enable one to handle dry- 

 ing questions involved in 

 these plants. The volume 

 in cubic metres per kilo, 

 of dry air, and the amount 

 of moisture associated 

 at different temperatures 

 and degrees of saturation 

 with every kilo, of dry 

 air, is shown by the curves 

 and will enable the prac- 

 tical man to increase his 

 output or improve his 

 economy in a given case. 

 The full discussion of 

 such problems is, how- 

 ever, beyond the scope of 

 this book. 



The Oil Mill. The composition of copra 



