60 The Philippine Journal of Science vm 



tion expenses. That these losses incident to storage and ship- 

 ment extending over periods of from two to four months are not 

 due entirely to the evaporation of water is evident from Table IV; 

 showing temperature, carbon dioxide, and weight loss relation- 

 ship of stored Laguna copra. It is obvious from these figures, 

 which show an increased temperature with a corresponding in- 

 crease in carbon dioxide over the normal atmosphere condition, 

 that slow combustion is taking place with the formation of carbon 

 dioxide and water, necessarily at the expense of the meat and 

 the oil. 



The increase in temperature of the copra parallels the in- 

 crease in carbon dioxide content of the atmosphere surrounding 

 the copra, rises to a maximum at the same time, and decreases 

 along with the decrease of the carbon dioxide concentration, 

 proving that the heat is produced by the combustion of the copra. 



Table IV. — Temperature and carbon dioxide relationship of commercial, 

 stored copra. Temperature of atmosphere, 29° C. 



Copra. 



Date. 



Tem- 

 per- 

 ature. 



Carbon 

 dioxide 

 (CO2) in 

 atmos- 

 phere over 

 stored co- 

 pra. 







°C. 



Per cent. 





( September 20 



40 



0.4 



Lot I _ - 



September 23 

 September 25 



40 

 38 



0.4 

 0.3 







September 26 



38 



0. 2-0. 3 





/ September 26 



50 



1.0 





September 27 



55 



1.6 





September 28 



65 



1.4 





September 29 



53 



1.2 





September 30 



50 



1.0 





October 2 



48 



0.8 



Lot II - - 



October 4 

 October 6 



48 

 45 



0.8 

 0.6 







October 7 



41 



0.4 





October 9 



40 



0.4 





October 10 



38 



0.4 





October 11 



38 



0.2 





October 12 



36 



0.2 





October 13 



35 



0.2 





September 26 



45 



0.8 





September 27 



44 



0.8 



j 



September 28 



42 



0.6 



Lot III - : 



September 29 

 September 30 



40 

 40 



0.6 



0.4 



| 





October 2 



38 



0.4 





October 4 



38 



0.2 





October 6 



36 



0.2 



