Extraction of Oil 



527 



Analyses of the copra showed as follows : 



Inland Nuts 



Sun-dried. Grill-dried. 



Kilos. Percent.* Kilos. Percent. 

 322-9 14-1 333-0 14-6 

 I9I-I 8-4 189-8 8'3 



9-8 iQ-i 

 59*2 57*o 

 * Per cent., i.e., of total weight of nut in husk. 



Roughly speaking, the meat taken from 

 unbroken or undried ripe nuts contains 

 50 per cent. of moisture, so that if 

 10 per cent, is left in the copra for ship- 

 ment, 40 per cent, has to be removed by 

 drying. This means that if the meat of 1,000 

 nuts weighs 647 kilos, say 650 to facilitate cal- 

 culations, then 260 kilos, or, roughly, a \ ton, 

 of water has to be evaporated out of every 

 1,000 nuts to be treated. At this rate 1,000,000 

 nuts would mean the removal of 250 tons of 

 moisture. 



Per 

 cent, 

 lopra , 

 Vater , 



I.), i. 



>i 2. 



.. 3- 



M 4" 



6.' 

 7- 

 8. 



9- 

 10. 

 ir. 



AVERAGE COPRA AND WATER CONTENTS OF TEN NUTS. 



Series 



i 2 3 45 6 78 91011 



46*5 5 2 ' 5 1 '3 407 337 5 ' 1 53'3 4^5 5 9 5 2 ' 2 49' ' 

 . 53-5 48-0 487 59-3 66-3 49-9 467 51-5 49-1 47-8 50-9 



Nuts fresh from trees, but fairly ripe, all green husks. 



Nuts very ripe, dead-brown husks. 



Nuts stored three months, just beginning to sprout. 



Nuts stored six months, but which had not sprouted. Here the varia- 

 tion among individual nuts (29-3 to 54-7 of copra and 45-3 tu 

 70-7 of water) was rather greater than had been expected. 



Nuts not fully ripe, fresh from tree. 



Nine nuts only, from same tree as No. 5, but fairly ripe. 



Ten nuts here, from same tree as No. 5, but dead ripe. 



Ten thoroughly ripe nuts from one tree. 



> > 



Ten nuts from a pile of 1,000 taken from trees near the sea. 

 Ten nuts from a pile of 1,000 from trees about 1,800 ft inland. 



