The selling-floor location of these utility units determines the zoning system of the warehouses on the tenth. There is a zone to each unit. While from that zone the requisitioned merchandise descends to the selling department which has asked for it by its own unit—which always is closest to it. Haul is reduced to a minimum. And system becomes simplicity.

With the actual selling of the goods in the store that is to come we have no concern at this moment. It is quite enough to say that the methods and the ideals that have brought Macy selling up to its present point are to be continued there, in the main at least, although broadened and advanced as future necessity may dictate. But with the despatch of the goods once sold in the new store we have an intimate and personal interest.

We have bought our pair of shoes. The financial end of the transaction is concluded. We have asked—as most of us ask—to have them delivered. Now follow their movement:

The clerk takes them to the packer. This, however, is but a mere detail. It is their future course that interests us. And if we had eyes properly X-rayed and farseeing we might observe that from the hands of the packer they will go presently to the spiral descending chute of the nearest utility unit.

Now we shall indeed need our new X-ray eyes. They follow the package for us—down the chute—with its gradients and curvatures so cleverly devised as to bring our purchase to the basement in just the right time and in just the right order—and into and upon the next stage of its progress.

Steadily moving conveyor-belts along each outer wall of the building receive the constant droppage of the packages from the six spirals of the utility units. Together these two long belts converge upon a terminal, the revolving-table, in the terminology of the present store. And here our packages receive fresh personal attention.

In the chapter upon Macy's delivery department we paid a careful attention to this revolving-table—which really is not a table at all and does not revolve. We saw it, then, as the very heart of the complex clearing-house of Macy distributions. It is, however, in itself a wonderfully simple thing, and yet when it was first installed it was regarded as nothing less than a triumph of efficiency.

Fortunately we do progress in this gray old world. Today we see how the revolving-table can be improved. For one thing, today we see it cramped and inelastic—no more than eight men may work at it at a single shift. Yet when it was built no one in Macy's dreamed that more than eight men would ever be required to work at it at a single time. And even in times of great emergency, but eight!

At the revolving-table in the new store, not eight but forty men may work simultaneously—when necessity dictates. The change has been effected by the simple process of elongating the "table." If a revolving-ring may be changed from round to square—and this was the very thing that Macy's accomplished in its present basement—why not from square to oblong? There is no negative answer to this question. And oblong it will become. And a present handling capacity of forty thousand packages a day can be increased to all the way from seventy-five thousand to ninety thousand.

Yet the main principle changes not. It is only in detail that one sees one's shoes traveling outward on a different path in 1931 from that of 1921. The great conveyors that lead from the revolving-table of today to the various delivery classifications as they are now made, will so lead in the new arrangement of things to such classifications as may then be made: only they will no longer be revolving-tables, but will in due time become the moving backbone of very long tables in the basement mezzanine, similar to the one which we saw extending the full length of the great tenth floor. And from those long tables, running the entire width of the building and up just under the basement ceiling, the sheet-writers will recognize their individual group of packages (by means of the clearly written numerals upon them), lift them off the slowly moving belt and make record of them, for the delivery department's own protection. After which, it is but the twist of the wrist to thrust them into the bins, separately assigned to each driver's run.