14 BULLETIN 49, HAWAII AGRICULTURAL EXPERIMENT STATION. 



When 2:5 or more gallons of material are to be applied at one time 

 the spraying outfit should be mounted on a 2-wheeled cart. Hand 

 pumps and barrel outfits can be drawn by mules, and similar outfits 

 may obtain working pressure if they are operated by chains con- 

 necting the pump with the running gear of the gasoline engine or 

 wagon. When considerable work is to be done several nozzles should 

 be attached and operated at the same time. 



COMPOSITION OF THE FRUIT. 



Fruits of five varieties of limes growing at the Hawaii Experi- 

 ment Station were analyzed in February, 1922. Tables 3 and 4 give 

 the results of the analyses. 



Table 3. — Composition of five varieties of limes growing at the Hawaii Station. 





Aver- 



Propor- 







Composition of juice. 





age 



tion of 



Propor- 



Propor- 











Variety. 



weight 



rind 



tion of 



tion of 











per 



and 



seeds. 



juice. 



Total 



E , e £ UC -| Citric 



Pro- 





fruit. 



pulp. 





solids. 



sugar. 



acid. 



tein. 





Grams. 



P.ct. 



P.ct. 



P.ct. 



P. ct. 



P. ct. 



P.ct. 



P.ct 





61.5 



39. 36 



2. 29 



58. 35 



9.0 



0. 81 



6. 75 



0. 381 





26.9 



44. 55 



.86 



54. 59 



8.7 



.22 



7.45 



.281 



Tahiti i 



155.0 



41.42 



.11 



58.47 



9.5 



.77 



• 7.43 



.388 





84.0 



49.2 



1.37 



49.43 



8.4 



1.17 



6. 10 



.375 



Bearss 



124.2 



41.22 



( 2 ) 



58. 78 



11.6 



1.69 



8.32 



.338 



1 The Tahiti "seedless" lime occasionally possesses some seeds, possibly due to pollination with near 

 varieties blooming at the same time. 



2 None. 



Table 4 compares the composition of several kinds of citrus fruits. 

 Table 4. — Composition of Hawaiian citrus fruits. 1 



Kind of citrus. 



Edible 

 por- 

 tion. 



Waste. 



Total 

 solids. 



Insolu- 

 ble 

 solids. 



Acid.2 



Ash. 



Pro- 

 tein. 



Fat. 



Fiber. 





P. ct. 



P. ct. 



P. ct. 



P. ct. 



P. ct. 



P. ct. 



P. ct. 



P. ct. 



P. ct. 



Lanes 



49. 17 



50.83 



11.75 



0.11 



9. 630 



0.352 



0.675 



3. 561 



0. 065 





33. 14 



66. 86 



6.44 



.30 



4. 753 



.232 



.356 



1.490 



.084 





72. 13 



27. 87 



12. 15 



2. 57 



1.243 



.453 



.681 



.387 



.575 





42. 39 



57. 61 



11.53 



6. 14 



.276 



.486 



1. 175 



.140 



1.977 



Kind of citrus. 



Sugars. 



Polarization. 



Reduc- 

 ing. 



Sucrose. 



Total. 



Direct. 



Invert. 



Tempera- 

 ture. 





Per cent. 

 1.50 

 1.53 

 2.09 

 .86 



Per cent. 



(3) H 

 0. 47 



3. 81 



7.26 



Per cevt. 

 1.50 

 2. 00 

 5. 90 

 8.12 



° V. 

 -0.4 

 +2.2 

 +3.5 

 +7.6 



° V. 

 -0.2 

 +1.6 

 -1.4 

 -1.6 



0 C. 

 31.5 

 32.3 

 28.3 

 31.8 

 Ha 





1 From Hawaii Sta. Ept. 1914, p. 67. 



2 As citric acid instead of as sulphuric acid, as given in the original analysis. 



3 None. 



In preparing the samples for analyses the lemons and limes were 

 squeezed to obtain the juice. The oranges and shaddocks were peeled 



