The daily exchange. [volume] (Baltimore, Md.) 1858-1861, 1860-05-21
CITY INTELLIGENCE.

NEW AND MosT IMPORTANT INVENTION. Mr.. S. U.
Carvalho, well-known citizen of Baltimore, has
recently invented and patented an apparatus which
he calls the ''Oxy-Hvdrogen Steam Super-heater'
for increasing the power of steam economically.
1t consists in passing steam after it has been gen.
Grated in the boiler through castron retOrt filled
with about equal parts of wrought-iron turnings
and the black prOto-Oxide of iron (black scales
from blacksmith's forge). The contents of the
retort serve two important purposes. Firstly, if
the retort is placed in the back connexon of the
boilers or in that part OF the furnace where it will
not become redhot, then the steam passing through
the nterstces of the particles contained in the re-
tort becomes thoroughly SUPER heated to the TEN,
perature of the retOrt, and is proportionatey in
creased in its elasticity and power. Should the re
tort become red-hot, then the following chemical
changes take place. As soon as the steam comes
in contact with red-hot iron, it is decomposed: the
oxygen is instantly absorbed by the iron, setting
the hydrogen free The hydrogen having great
affinity for the oxygen of the proto-oxide
unites with it, forming steam, which passes out of
the retort at corresponding temperature; this
compensation goes on continually, the oxide be-
coming metallic and the metal becoming oxOdized.
This is laid down in all works chemical philoso-
ply, and fully endorsed by Professors Aiken
and Piggott of this city. Specimens of
retort taken out of the fire and broken up after be-
ing at red heat, with steam passing through it for
ten weeks, have been submitted to careful analysis
and the iron pronounced perfect as it was when
it came from the founder. The apparatus attached
to the retort is simple and practical and be ap
plleu 10 any UOneI, lOcOmOtlVe standing, or
transverse, at comparatively small cost-not over
from Sl00 to $500, according to size. Its practical
working is now being successfully demonstrated at
the extensive sugar refinery of Messrs. Dougherty
Woods, where it has been recently introduced
by the MeSSrs. A. & w. Denmead q Sons, engi-
neers, of this city, and where we have seen it in
full operation. The proprietors, Messrs. Dough-
erty Woods, assert that it not only a large
per cent of fuel, but gives them superabundance
of steam of better quality than they ever had be-
fare Thp pa1 hau inst mil taH
another apparatus for Mr. Carvalho, which will to-
day be placed the principal boilers of the ord
nance department of the navy-yard at W Washington,
under the immediate superintendent of the Gov
ernment. The distinguished engineer, Septimus
Norris, Esq, of Philadelphia, is also applying one
to an engine on the Pennsylvania Central Railroad.
RIoTING-fon Shot.-About ten o'clock on Sat-
urday night a man named Benjamin Il. Coover,
door-keeper at Washington Hall, was shot by
man named Amos Thompson. The ball entered
the left breast the shoulder, and striking the
collar bone glanced downward and lodged in
the large muscle of the breast. DR.. Houck was
called and probed the wound, but did not succeed
in extracting the ball. The wound is not consider
ed dangerous. About nine o'clock Thompson,
Michael Conner and number of their friends
hailing from the York road, entered the Hall
where the regular performances were in progress.
After being in short time the two men named be-
came very disorderly, crying ooh you Democrats, -
and with other exclamations interrupted the pro-
ceedings The proprietor, Mr.. Leutbecher, en-
deavored to get them out but failed, whereunon
the door-keepers, Coover and Samuel McClintock,
fOrciby took them from the room. On getting
them on the stairway which leads from the street
to the side entrance of the Hall, the two rowdies
assaulted the oorkeepers but the latter proved
too much for them, and succeeded in forcing them
to the pavement. Thompson at this stage drew a
revolver and fired up the steps, and the ball took
effect in Covers shoulder Thompson, Conner,
and their friends then rallied with the cry of "Go
in Democrats" and "Down with the damn Know
Nothings." large crowd gathered and a general
fight commenced in which the Y York road party
received decidedly the worst of the fight. They
were driven out of Baltimore street into Front
street, after fight which lasted about fifteen min
utes, when policeman VIM. II. johnson came up
and arrested Thompson and Conner and took them
to the Central police station, where they were
committed to Jail for Court by Justice Hiss. The
police were not present during the fight, and their
absence was owing to the fact that Marshal Kane
had specially detailed the force from Baltimore
street at that point and also from several of the
adjacent beats, for the purpose of dispensing the
notorious gang of ruffians who prowl about the
locality of the draw-bridge, and who but few
nights since drove negro woman with an infant
in her arms into the dock, whereby the child wa:
drowned.
GAMBLING ON THE SABBATH.-I esterday afternoon
Lieut.. Kinney, and several policemen of the East
ern district, made a decent on a number of young
men who were setting under tree in field be-
tween the Hartford and York roads playing cards
There were some fifteen twenty in the crowd
and on seeing the officers approach they took to
their heels. Two of them named George Covng
ton and J acob Bankard, were arrested and taken
to the Eastern police station where Justice Griffin
fined them 81 and costs each, and committed them
in default of payment.
About three O'Clock yesterday afternoon con
stables Everett .and Hergesheimer entered a house
on Centre market space, near Lombard street
where they surprised some twenty or twenty five
men engaged in gambling. The proprietor of the
house, W. Moses, drew a revolver and threatened
to shoot Everett. Several police were called to the
assistance of the other officers, and Levi Spendower
Simon Nagel, David Dilan, FL. Goldsmith, F. 10
seph and W. Moses, were arrested and taken to the
Central station, where Justice Hiss fined the frs
five named SO. 331a and costs each, and W. Nose!
$50 and costs. Moses, Joseph and Goldsmith were
also held to bail for Court the charge of resisting
the officers.
WOMAN DRowNEp-Inquest-O Saturday morn
ing about halfpast six o'clock woman, named
Sarah Rosenstine, was accidentally drowned
in Jones' Fall, in the rear Of house No. 81
where her mother lives. At the hour namet
she went to the wall at the foot of the .yart
attached to the house for the purpose, it ii
| supposed, of throwing a pail OF water into th'
Falls, and by some accident fell in herself and wa
| drowned. She was missed by the family, and OF
| search being made her body was found, partially
| exposed, in the water some few yards from wher'
| she fell. Coroner Hall summoned jury and helt
| an inquest over the body, and verdict of accden
| tai drowning was rendered. As many forme
| jury has beeD this one was dsgraced by one OF it
| members, Reni. Swami, being intoxicated to sucl
a degree that he was thoroughly incapacitated fo
the discharge of his duty. Before the verdict wa
rendered he left, and was arrested by one of tn
police and brought back. He gave as an excuse 70
leaving that. as he was unable to write, he though
the foreman of the jury had signed his name 70
him. 1t is disgraceful fact that frequently me-
| who are intoxicated are selected as jurors by th
| Coroners.
SUMNER UNIFoRMs.-The Messrs. Stein Bros
| Baltimore street, near Liberty, now engage
| in making the summer uniform for the ney
| police. 1t will consist of brown duck coats an
| pants, with Panama hat. 1t will be put on by tn
force on the lst day of June.
BLACK LEAD PENcTLs.-Henry Taylor, of the Su
| Iron Building, is receiving pencils made to hi
| order and stamped with his name, from England
1 We are indebted to him for a sample, which are
excellent quality.