objects, etc. See under the following heads: —
Block and tackle.Gin-block.
D-block.Long-tackle bloctices in vogue among the savages of Turkestan at this day, and which we hope are now in course of abatement by Russia.
1. (Nautical.) a. A small pulley of hard wood, having a groove round the outside and a hole in the middle, ansch the emission of light is prevented, and is unfortunately almost as handy for burglars as policemen.
（Nautical.) A wooden ring or thimble used as a cringle in the leech of a sail.
（Carpentry.) A term sometimes applied to the angle formed by the junction of two plane surfaces.
1. A rampart, wall, or parapet around an inclosure, such as a fortification or battery.
The boulevards of Paris and other cities a
It is 26 inches in diameter; the telescope is now in working position in the building erected for it under the superintendence of Professor Newcomb.
See the following varieties : —
Aplanatic lens.Microscopic lens.
Concavo-convex lens.Orthoscopic lens.
Convex lens.Periscopic lens.
Convexo-concave lens.Photographic lens.
Convexo-convex lens.Plano-concave lens.
Crossed lens.Plr.Holophotal light.
t to stand loose on the shaft.
Pulleys for household hardware have specific names derived from their modes of attachment.
u, side pulley.
v, well-pulley for dumb-waiters, etc.
Specific names are given to pulleys, according to place, purpose, material, construction.
Anti-friction pulley.Loose pulley.
Belting.Pulley clutch or tongs.
Block (varieties, see block).Pulley-sheave.
Block and tackle.Pulley-stand.
Bull's eye.Pulley suspension-hook.
Conical pulley.Scored pulley-sheave.
Fall and tackle.Taglia.
Fast and loose pulley.Tension-pulley.
Friction-clutch pulley.Two-speed pulley.
, Harbor of San Francisco.
Robert Fulton published his work on this subject in New York, 1810.
His experiments were made at Brest in 1801.
On July 3, in that year, he embarked with three companions on board his plunging-boat in the harbor of Brest, and descended in it to the depth of 25 feet, which was about as deep as the strength of his machine would bear.
He remained below in darkness one hour.
He afterward tried candles, but objected to them as destroying the vitality of the air. Bull's-eyes were then inserted in the top of the boat, and found satisfactory.
His boat had one mast, a mainsail, and a jib, which moved her at the rate of 2 miles an hour on the surface, and were stowed in 2 minutes when preparing to dive.
When submerged, the vessel was moved by the exertion of 2 men at the engine, while he governed the position of the boat by regulating the machine which kept her balanced and determined her depth below the surface.
The engine moved her about 500 yards in 7
d, H. Fulton.
American, 57; 1,000 yards.
In a possible 60.
The sizes of the targets of the National Rifle Association at Creedmoor are as follows: —
Up to 300 yds.300 to 600 yds.600 to 1,000 yds.
Size6 × 2 feet6 × 6 feet6 × 12 feet.
Bull's-eye.8 × 8 inches2 × 2 feet3 × 3 feet.
Center2 × 2 feet4 × 4 feet6 × 6 feet.
The following is the complete score of the shooting at Dollymount, Ireland; the targets are showBull's-eyes count4.
The following is the complete score of the shooting at Dollymount, Ireland; the targets are shown in Plate LXVIII.
The American team.
800 yds.900 yds.1,000 yds. Total.
Col. H. A. Gildersleeve565652164
G. W. A. Yale575251160
Major Henry Fulton585746161
R. C. Coleman564852156
Col. John Bodine525951162
Gen. T. S. Dakin585551164
The Irish team.
Total for American team967
Total for Irish team929