depending, of course, upon the depth of earth overlying it. The excavator
will dump 30 feet from the center line of the car, and 26 feet above the
track, which is laid on the rock. Total weight about fifty tons. The crew
required for its operation consists of 1 engineer, 1 fireman, 1 craneman,
and 4 to 5 pit men to tend jacks, move track, etc.

In the illustration the boiler connections are omitted, also the housing
for the protection of the crew. The design is characterized by the evident
care which has been bestowed upon securing simplicity and
durability.--_American Engineer._

* * * * *




THE OSGOOD EXCAVATOR.


At a recent meeting of the Engineers' Club of Philadelphia, Mr. John C.
Trautwine, Jr., exhibited and described drawings of a large land dredge
built by the Osgood Dredge Co., of Albany, New York, for the Pacific Guano
Co., to be used in removing 8 to 15 feet of material from the phosphate
rock at Bull River, S.C.

The more prominent features of the machine are the car-body, the water
tank, boiler and engine, the A frame (so-called from its slight
resemblance to the letter A), the boom, the dipper-handle; and the dipper,
drawings of which were shown and described in detail.