318 VALUATION, DEPRECIATION AND THE RATE-BASE 
8. To cover a fair allowance of profit — thus giving the owner 
participation in the general prosperity, which his utility 
helps to create. 
Items 2, 3 and 4 by definition are of a temporary character. 
Ttems 6 and 7 are not to be capitalized when value is estimated 
from present and prospective earnings. These two items and 
item 8 can ordinarily be brought into a fair relation with the 
volume of business. There is no accepted method of evaluating 
intangibles. Capitalization of the increment of earnings for 
which they are responsible is apparently the best method of 
approach.