nd fostering care of the
Government.--Hon. HENRY CLAY has been spending the August weeks at
Newport, R.I. He has received essential benefit from the sea-bathing and
the relief from public care which his temporary residence there
affords.--Commodore JACOB JONES, of the United States Navy, died at his
residence in Philadelphia, on the 3d ult. He was in the 83d year of his
age, and stood nearly at the head of the list of post captains,
Commodores BARRON and STEWART only preceding him. He was a native of
Delaware, and one of the number who, in the war of 1812, contributed to
establish the naval renown of our country. For the gallant manner in
which, while in command of the brig Wasp, he captured the British brig
Frolic, of superior force, he was voted a sword by each of the States of
Delaware, Massachusetts, and New-York. He was, until recently, the
Governor of the Naval Asylum, near Philadelphia.--The city authorities
of Boston, acting under the advice of the Consulting Physicians, have
decided to abandon all quarantine regulations, as neither useful nor
effectual in preventing the introduction of epidemic
diseases.--Professor FORSHEY, in an essay just published, proves by the
result of observations kept up through a great number of years, that the
channel of the Mississippi river is _deepening_, and consequently the
levee system will not necessarily elevate the bed of the river, as has
been feared. On the contrary, he thinks confining the river within a
narrow channel will give it additional velocity, ant serve to scrape out
the bottom; while opening artificial outlets, by diminishing the
current, will cause the rapid deposition of sediment, and thus produce
evil to be guarded against.--A project has been broached for completing
the line of railroads from Boston to Halifax, and then to have the
Atlantic steamers run between that port and Galway, the most westerly
port of Ireland. In this way it is thought that the passage from
Liverpool to New York may be considerably shortened.

In SCIENTIFIC matters some interesting and important experiments have
been made by Prof. PAGE of the Smithsonian Institute, on the subject of
Electro-Magnetism as a motive power, the results of which have recently
been announced by him in public lectures. He states that there can be no
further doubt as to the application of this power as a substitute for
steam. He exhibited experiments in which a bar of iron weighing one
hundred and sixty pounds