We employ our well-earned immunity in preparing for the next series of batteries, or in thinking of the cost to Germany, at one hundred francs a shot, of all this futile shelling. Drew, in particular, loves this cost-accounting business, and I must admit that much pleasure may be had in it, after patrol. They rarely fire less than fifty shells at us during a two-hour patrol.
The bulletin didn't say, of course, how much it cost to produce it, but with our system of cost-keeping where we charge up labor, feed and rent and credit them for whatever they produce, we'll be able to tell almost to a cent just what they earn." "Won't you let me keep the cost-accounting system for the chickens, Bob?" asked Edith. "I'm sure I'd like very much to look after them all myself.