It has been seen that about 50% of the charges collected by the express companies for the transportation of packages go to the railroads, 50% remaining to the express companies. To be exact, in 1917 the sum of $222,860,373 represented the collection charges by the express companies, of which $113,535,059, or 51%, went to the railroads, leaving to the express companies from transportation, $109,325,314. Revenues of the express companies from operations other than transportation brought their total revenues up to $115,920,129. Their operating expenses were $113,721,057. In other words, for every 10% by which Government operation of the express service might decrease the operating expenses of the express service, even if the present contracts with the railroads are assumed by the Government, there should be a saving in the amount of express rates assessed the public of no less than 5%. Such savings seem inevitable under a Government postal express. Vast as is the extent of the parcel-post operations, there is no evidence that all or even most of its ramifications have yet reached that point of magnitude where the addition of new business means an increasing instead of a decreasing cost per unit. Let it be remembered that the parcel-post carried in 1917 some 1,120,000,000 parcels and the express companies some 280,000,000; so that, taking into account the secondary features of the express service not performed at present by the post office, the inclusion of the express service in the parcel post would increase the latter's activities not much more than 25%. Certainly, it may be fairly assumed that any such services in which the law of increasing costs per unit might hold would be at least counter-balanced by services in which the law of diminishing costs per unit would hold; so that we may consider the economies of a Government postal express absolutely instead of relatively. CONSOLIDATION OF EQUIPMENT