320 UNIVERSITY OP CALIFORNIA EXPERIMENT STATION 



TABLE 16 

 RETURNS PER ACRE, F.O.B. PACKING HOUSE. 



LISBONS 

 Heated Plots Unheated Plots 



Plot 4 Plot 1 



$1759.59 $424.22 



Plot 6 Plot 8 



$888.00 $300.98 



Plot 9 Plot 10 



$2563.46 $128.15 



Average of the three series 

 $1737.02 $284.45 



EUREKAS 



Plot 7 Plot 5 Plot 3 



Well Heated Poorly Heated Unheated 



$1423.06 $768.47 $352.54 



UNHEATED EUREKAS vs UNHEATED LISBONS 



Plot 3 Plot 2 



Unheated Eurekas Unheated Lisbons 



$352.54 $1126.35 



Plots 3 and 2 were partially protected by heaters in neighboring groves. 



TABLE 17 



AVERAGE COST OF HEATING PER ACRE ON ALL HEATED PLOTS 

 IN THE EXPERIMENTS 



Stoves 



Cost $53.29 



Interest.. 3.20 



$56.49 



Depreciation, 33^% $18.78 



Reservoir and pipe lines 



Cost $32.82 



Interest... 1.97 



$34.79 



Depreciation, 10% 3.48 



Oil used 57.95 



Filling pots, lighting and refilling 21.09 



Total average cost $101.30 



