for

ft. The figures in Columns

are taken from Mr. Meem’s table, previously referred to; those for Columns

are from the diagrams, [Figs. 17] and 18.

In quoting Mr. Meem’s figures, the writer must not be understood as endorsing in any way his theory; but the results are of interest as embodying the conclusions of a practical engineer of large experience.

TABLE 5.