Paul, you say at the beginning of this thread that you are "... getting kinda sick of proving shit". I, for one, don't think you will prove anything by measuring the volume of wood you are burning. Measuring and comparing the weight of wood burnt would be only the only reasonable comparison given what we all know about the amount of energy contained in a given weight of wood/as opposed to volume. Saying that as you are the one who is "doing the work, I am choosing to follow the universal standard format for measuring firewood: the cord" contributes nothing to the discussion, or your own credibility. The cord is indeed a universal measurement of wood for when it is sold, but not as a measure of its calorific value - this is usually reflected in the price that is paid per cord.