The paddle wheels of the U. S. Steam Frigate Mississippi, are so constructed that they can be diminished in diameter if necessary by shortening the arms.

It is stated in one of the fashionable city papers, that there are 190 doctors in Boston, more than their are patients." It must be a healthy place.

The Mount Savage Railroad Iron Company is turning out 100 tons of railroad bars per day, and adding much larger facilities to its works.

The Mastadon Skeleton, lately discovered in New Jersey, and being exhibited in this city, is 23 feet in length and 11 feet high. It is diverse from the elephant, and apears to have been carnivorous.

An ancient Elm which still flourishes within three miles of Providence, R. I. measures 36 feet in circumfrence, 12 feet from the ground. The circumference of the top is over 300 feet.

The Pittsburg Age says that there are now in progress of erection, in and near that city, twenty-six furnaces, which will turn off between seventy-five and one hundred tons of iron per day.

It is decided by the logical schools that Puseyism is derived from catechism, while puppyism comes from dogmatism;-that makes the difference.

A company has been formed at Portsmouth, N.H., who intend erecting a steam cotton factory to carry twenty thousand spindles, which is to be put under contract immediately.

A new and extensive woolen factory is being established at Fredricksburg, V.A.; we are glad to hear of the progress of manufactories at the South.

The Picnyune has a story of a rattlesnake that swallowed a mole; but the mole would not stay swallowed, but gnawed his way out, thus killing the snake, and was off.

There is much talk about introducing electro-magnetic light, as a substitute for oil or gas; when we learn more about it, we shall be free to communicate particulars.

The Royal Printing Office of France possesses fonts of type in upwards of one hundred different languages, and is still receiving extensive additions.

The egg trade of Cincinnati, the past year amounted to 24,191 barrels,-2,176,333 dozens, or 26,116,000 eggs-sufficient to cover twenty-five acres of ground.

It s contemplated to establish a steamboat ferry immediately below the great falls of Niagara, which will give visitors a great advantage in viewing the cataract.

The shares in the stock of the New River Company of London, which were at first sold at (Pounds)100, are now worth (Pounds)15,000 each.

The Amoskeag (N.H.) Manufacturing Company have declared a semi-annual dividend of ten percent., yet leaving a reserved fund of $600,000.

In the town of Eden, Me., there is owned a schr. called the 'Garden,' and which is commanded by Capt. Adam Wilkins. Thus Adam yet holds command over the Garden of Eden.

In the county of Cayuga, N.Y.> , resides ninety-three "old revolutioners," or soldiers of the revolution. These veterans were all invited to participate in the celebration of the 4th ult.

Several springs have been recently discovered in Genesee county, the waters of which are acidulated nearly to the degree of lemonade. The acid is the sulphuric.

One of Morris's engines, of 18 tons, has lately hauled over the Reading Railroad seven hundred and fifty tons, at one load. This engine should be called the Samson.

One of the factory girls of Lowell, has earned $3,150 in the mills of that place, of which she has saved $2000, besides applying $1,150 to the support of her parents.

There is to be several railroad tunnels made and extended under the city of London during the present season. So writes Willis.

Boston, according to the new census, contains nearly 129,000 inhabitants, showing an increase of 26,000 within the last five years.

It is estimated that there are now in process of erection within the limits of Pennsylvania, at least one hundred new iron furnaces.

A slave in Charlestown, S.C., recently, at the imminent risk of his own life, plunged into the ragging current of the river, and saved the life of a small white boy, who had fallen in and was drowning.

No less than 282,599,000 tons of coal have been transported over one railroad, from the Schyuylkill regions, this season, up to the 9th inst.

The town of New Bedford, Mass., contains wealth enough to divide $1,000 each to every man, woman and child within its limits.

Have the courage to pay a debt, while you have the money at command. Have the courage to wear your old coat till you can pay for a new one.