of an indicator diagram in an ordinary or a compound engine. Calculation of the work upon the piston by means of the indicator diagram; mean effort determined by this measurement; case of an ordinary or a compound engine. Determination of the effective force on the shaft. Determination of the nominal force of ordinary and compound engines at high and at low pressure. Value of nominal horse-power in kilogrammeters. Calculation of the expenditure of steam. Determination by the indicator diagram of the necessary elements for this calculation. Comparison between the pressures as shown by the indicator and the real pressures of the boiler and condenser. Comparison between the pressures shown by the indicator in the small and large cylinders of a compound engine during their communication. Forms of indicator diagram in the case of running with variable cut-off, with an almost complete closing of the throttle, in case of high-pressure engine, of leaks, of priming, of bad arrangements of the indicator, &c. Comparative forms of indicator diagrams, of small and large cylinders in compound engines.

Approximate measurement of the work of air-pumps. Calculation of the thrust of the propelling instrument when the work upon the pistou and the speed of the vessel are known.

Hour.

NOTE O.

ROUTINE ON BOARD THE GERMAN CADETS' PRACTICE-SHIP.

4.45 to 5.30

Instruction in the duties of the service or exercise in boats with oars or with sails.

2d Session.

REPORT

ON THE

No. 52.

TRAINING SYSTEMS

FOR THE

NAVY AND MERCANTILE MARINE OF ENGLAND,

AND ON THE

NAVAL TRAINING SYSTEM OF FRANCE,

MADE TO THE

BUREAU OF EQUIPMENT AND RECRUITING, U. S. NAVY DEPARTMENT, SEPTEMBER, 1879.

BY

LIEUTENANT COMMANDER F. E. CHADWICK,

U. S. NAVY.

WASHINGTON:
GOVERNMENT PRINTING OFFICE.

1880.