"Consideration" en el common law (según "Gaslight")

De la obra de teatro de Patrick Hamilton "Angel Street" (estrenada y más conocida como "Gaslight"): 

Mr. Manningham: Consider them? There’s your extraordinary confusion of mind again. You speak as though they work for no consideration. I happen to consider Elizabeth to the tune of sixteen pounds per annum. [Crosses to mrs. manningham.] And the girl ten. Twenty-six pounds a year all told. And if that is not consideration of the most acute and lively kind, I should like to know what is.