1455
326 Howe, M. & 1. M., Philadelphia, Pennsylvania .
Brooms and whips.
.327 Pennsylvania Railroad Company, Phila-delphia, Pennsylvania —Proprietor.
Model of one span of a wooden viaduct on the Penn-sylvanian Railroad across the Susquehanna River .
Scale:—The whole viaduct is 3,670 feet long, having23 spans similar to the model, each 150 feet in the clear.
Height above low water of the river, 44 feet. Abut-ments and piers of masonry: rock range work.
This bridge was built in about 18 months, and hasbeen in use two years.
The cost of masonry, was . . 99,000 dollars.
„ wood and iron work . 90,000 „
Total cost of bridge . . 189,000 „
Cliief engineer Mr. Edgar Thomson.
Length of road . . 246f miles
Two branches . . 9J „
Total length of road and branches 2561 ,,
The entire road cost, including interest, 9,680,000dollars. The eastern division, 140 miles, is in use.
328 Robbins & Lawrence, Windsor, Yermont.
Rifles : the various parts made to interchange.
329 Bagby, Gov. A. P., Montgomery.
Sample of raw cotton.
330 Lak, David, Memphis, Tennessee .
Samples of ginned cotton.
331 Holmes, J. E., New York —Inventor.
Model of a ratchet hoisting machine.
332 Lee, Wellington, New York .
Specimen of spathic iron ore.
[This invaluable ore, of which Connecticut appears topossess the most remarkable mine in the United States ,will justify a more particular and detailed notice in thisreport, from the fact that it has been overlooked as aniron ore with us nearly to the present time, and still re-mains in a neglected state. The mine was discovered at avery early period in the history of the State; and theabundance and peculiar properties of the ore excited ahigh degree of curiosity and expectation. Numerousattempts were made to work it as a silver mine, and im-mense sums expended without exciting even a suspicion ofits value for iron.
Spathic iron is one of the most disguised of all the oresof iron, possessed of economical value. Its high specificgravity, added to the development of iron rust occasionedby exposure to the weather, are the only properties bywhich its ferruginous character is generally detected. Itsname of spathic (or sparry) iron was bestowed in allusionto its brilliant and easily-elfected cleavages in three direc-tions, and which result hi rhombic fragments of constantdimensions. Its hardness is greater than that of calca-reous spar; and its colour, when freshly taken from itsrepositories, is a light-yellowish grey (357), which passes,however, by exposure to the air, to a reddish brown (358).It is composed of protoxide of iron from 57 to 60 percent., carbonic acid 34 to 36 per cent., with a proportionof manganese from 0'5 to 1’5, and about the same quantityof lime and magnesia. The lime and magnesia, however,are liable to slight variations in their proportions.
The spathic iron mine in question occurs in a mountainabout 350 feet in height, situated on the western bank ofShepang river, in Rosbury, about four miles above its
jmietion with the Honsatonic. The mountain is knownin the vicinity by the name of Mine-liill. The rock ofwhich it is composed is, for the most part, concealed by asoil supporting a fine growth of hard wood. Whereverthe rock makes its appearance, however, it exhibits aremarkable uniformity in character and arrangement. Thedirection of the strata is nearly N. E. and S. W., with adip of 25° or 30° to the northwest. The ore occupies aperpendicular vein from six to eight feet in width, cuttingdirectly across the strata; and has been detected atnumerous places from the base of the hill near the banksof the river, quite to its summit, a distance of above halfa mile. The course and width of the vein, wherever ex-posed, appear uniform. ( From Dr. Shepard's GeologicalSurvey of Connecticut ). —S.]
333 Tuckerman, E. G-., New York —Proprietor.Butterwortli’s patent combination lock.
334 Browne & Lambert, New York —Proprietors.Two of Whitmarsh’s patent portable extension beds.
335 Bartholomew, E. H., New York —Inventor.Hydrant safety-valve.
336 Ryle, John, Patterson, New Jersey .
Floss, and sewing-silk.
337 Chatain, Henry, New York .
Patent machine mouldings.
338 Eastman, William P., Newark, New Jersey .Knitting machine, &c.
339 Sibell & Mott, New York —Manufacturers.Bank and account books.
One set as used in the City Bank, New York .
340 Haskell, Merrick, & Buel, New York —
Manufacturers.
Samples of powdered drugs.
341 Oliver, T., New York —Inventor.
Tailor’s transfer and patterns.
342 Hotchkiss, William, Lewiston, New York .Sample of Soule’s winter wheat.
343 Hillyer, Virgin, New York .
Samples of wheat flour.
344 Adirondac Manufacturing Company, Jersey
Specimens of iron and steel.
Pigs of decarbonized metal.
Bars of iron, and 500 lbs. of assorted cast steel.
The iron-works are located in the town of Newcomb,Essex County, N. Y., at the sources of the Hudson river ;about forty miles, by the road, westward from CrownPoint, on Lake Champlain , from whence transpoi-tation ishad by water, or by water and railroad, to all the princi-pal markets in the country. For ten of these forty miles—that is from tho Adirondac village and the iron-works,to Taliawus, or lower works, as they are called—there isslack water navigation, by which transportation can beconducted very cheaply, by means of steam tow-boats,leaving only about thirty miles of land carriage. In thisregion, for about five months in the year, the snow lieson the ground, and affords facilities for the transportationof the iron to Lake Champlain , and of commodities fromthat lake to the works, which are of great advantage.Another, and it is supposed a cheaper mode of transporta-tion, will soon be had by means of a line of plank roads,