We have lately examined the latest pumping engine plant, and the largest
yet built for this service, by the firm of H.R. Worthington; it is to be
used at the Osborne Hollow Pumping Station. As patents are yet pending
on certain new features in this engine, we must defer a full description
of it for a later issue of our journal.

The Pennsylvania line has a single 6-inch pipe 280 miles long, with six
pumping stations as shown in the map, and groups of shorter lines, with
a loop extending from the main line to Milton, Pa., a shipping point for
loading on cars. At Millway, Pa., a 5-inch pipe leaves the Pennsylvania
line and runs to Baltimore, a distance of 70 miles, and is operated
from the first named station alone, there being no intermediate pumping
station.[1] The Cleveland pipe, 100 miles long, is 5 inches in diameter,
and has upon it four pumping stations; it carries oil to the very
extensive refineries of the company at the terminal on Lake Erie. The
Buffalo line is 4 inches in diameter and 70 miles long; it has a pumping
station at Four-Mile and at Ashford (omitted on the map). The Pittsburg
line is 4 inches in diameter and 60 miles long; it has pumping stations
at Carbon Center and at Freeport.

[Footnote 1: Millway is about 400 feet above tide-water at Baltimore,
but the line passes over a very undulating country in its passage to the
last named point. We regret that we have no profile on this 70 mile line
operated by a single pumping plant.--_Ed. Engineering News_.]

A very necessary and remarkably complete adjunct to the numerous pipe
lines of this company is an independent telegraph system extending to
every point on its widely diverging lines. The storage capacity of the
National Transit Co.'s system is placed at 1,500,000 barrels, and