ated further by comparisons
between simple adhesion experiments and those obtained with beams.

The speaker heartily concurs with the author's criticism of the amount
of time usually given by designing engineers to the determination of the
adhesive stresses developed in concrete beams, but, according to the
speaker's recollection, these matters are not so poorly treated in some
books as might be inferred by the author's language. For example, both
Bulletin No. 29, of the University of Illinois, and Moersch, in
"Eisenbetonbau," give them considerable attention.

The ninth point raised by the author is well taken. Too great emphasis
cannot be laid on the inadequacy of design disclosed by an examination
of many T-beams.

Such ready concurrence, however, is not lent to the author's tenth
point. While it is true that, under all usual assumptions, except those
made by the author, an extremely simple formula for the resisting moment
of a reinforced concrete beam cannot be obtained, still his formula
falls so far short of fitting even with approximate correctness the
large number of well-known experiments which have been published, that a
little more mathematical gymnastic ability on the part of the author and
of other advocates of extreme simplicity would seem very necessary, and
will produce structures which are far more economical and amply safe
structurally, compared with those which would be produced in accordance
with his recommendations.

As to the eleventh point, in regard to the complex nature of the
formulas for chimneys and other structures of a more or less complex
beam nature, the graphical methods developed by numerous German and
Italian writers are recommended, as they are fully as simple as the
rather crude method advocated by the author, and are in almost identical
accord with the most exacting analytical methods.

With regard to the author's twelfth point, concerning deflection
calculations, it would seem that they play such a small part in
reinforced concrete design, and are required so rarely, that any
engineer who finds it necessary to make analytical investigations of
possible deflections would better use the most precise analysis at his
command, rather than fall back on simpler but much more approximate
devices such as the one advocated by the author.

Much of the criticism contained in the author's thirteenth point,
concerning the application of the elastic theory to the design of
concrete arches,