Lb. per sq. in.
Gileppe (Verviers). 88
Furens (St. Etienne). 93
Puentes. 112
De Ban. 113
St. Chamond. 114
Alicante. 154
Hamiz (Algeria)--failed. 157
Habra (Algeria)--failed. 185

A diagram comparing the section derived from Molesworth's formula and
those of Furens, Gileppe, Vyrnwy, and Quaker Bridge, is given at Fig. 20,
the limit of pressure assumed for the masonry being 93 lb. per square
inch, which is that of the Furens, the Gileppe being 88.

* * * * *




NEW DREDGING MACHINERY.


We illustrate the new dredger Ajax, recently built for Mr. Geo. F. Smith,
of Stockton, Cal.

The dredger has now been working for two weeks at Wakefield, and, we are
informed, is giving entire satisfaction; having been repeatedly timed to
be discharging clay at the rate of 220 cubic yards per hour.