The Sun.
London, England, 1852-03-25 00:00:00

LIST OF QUERIES.

Title of the Institution ••410•••
Name and addteas of Citi-EapouL:eut 011 beii4lf of the

Institution
1. What is the total number of your mtninors?
2. Are you in &your of the 9eheral idea, which Mr.
CheAer has 2 kr:,teheti, of the coulbthauvu of many local
institutions in union with the Society of Arts?
3. Wbat are the chief advahtvw-s which you expect
to derive from such a combinati,.o and union?.
4. About Whris nurnt‘er of Ire ures, of various kinds,
would you desire to have yearly?

At what 6easen,?
5. At what rt-, on an average, could you afford to pay
for such knave.?

6. Which would you prefer,
a. that this Society should receive from you an an-
nual subscription, equal to the average cost of the,
lectures, and supply you with lecturers for the year,
at no fur.her expense to yours:Ayes? or
b. :hut the Sortiety should negotiate, and make ar•
rangements, between you sec the lecturers, and,
(receiving from you a small annual contribution' to
defray the Society's actual expenses of cone-
spond'enee, &c.) leave it ei-it7ftly to yourselva to
remunerate the lecturers upon such terms as might
bo agreed on?
7. Do you cocsider it &Arable to have occasionally
exhibitiotis of usciul inventions which have receined
medals from the Society of Arts, provided that such
arrangements could be made by the Society as would
enable you it, have the exhibitions without any serious
liabillty, and with the chance of ouch exhibitions being
self-supprx!ing?
8. Is there any opening for the establishment of
Drawing School, or a Modelling School, in connexion
with your institution?

IN.T;TITUTIOg OF CIVIL ENGINEgRS.
On Tueiday, James M. Rendef, , President, iu the
chair, )11,- firA paper read was "On the Results of the
of Tubu'ar 13a)krs, or of Flue -13,:ilers of Inadequate
Surfec©, or Lnperfect Absorptiuu of Heat," by Admiral

EallDundous,lll.
This pai,er tviveultei the getcrid introduction of what
were tetteA " ec3nstuical hc;it trip boilers," or boilers
having Nettic;;,l water tuba, iu.stead of calque fire
tithes, contained within a chatnlicr, , into- the upper of
which the hot precincts of cembus.ion were introduced,
and allowed to circulate until, by the abstraction of
heat, they detcaided to the bottom, and ptszeti into the
chimney at a temperature little exceeding that of boil-
ing water. From some trial a which had-been mac at
Wuolwieh and Chathstrn in 1844, as well as from the
experierca which had been ga:ned by their actual appli-
cation to seine of the North American trawatlantic
steam-plcket?,, and some ia the service of the Emperor
of Kuala, it was contelded that these boilers possa.ided
greater evaporative 'powers, and were more economical
than those ordinarily in use; and, moreover, that their
safety was tench greater, owing to the produels of. com-
bustion- pasi.ing into thesis mLNp Lt a very low tempera-
tore, .inttead. of_ the u,ual high teteper,aiurn, from which
it Was apprehended much dang:r had been, and might
still be, incurred.
The recoiid paper read was, " On cirtaia points in the
constructien of Marine Boilers," by Mr. J. Scott Russell,
_

a Just C E.
The etreor havieg strrived at certe:n practical results
relative to the construotien of mutioe butlers, put them
into practice street ten years back, in designing the
boilers fur the Royal Mail Steen, P..ekets Clyde, Tay,
Tweed, and Teviot; and•as they ha I been in cutthroat
work ever since, running from 42,000 miles to 48,000
miles per annum, without material repairs, he believed
their daraeility, combin.d with eller:five cumbuation and
econony of fuel, had been fully e‘tebitened.
The priucipies on.which these teAlert-were constructed
differed teem those generally recegund.., In the first
place it wag cousideied, that a judiciens distribution of
the most intensely heated surfaces woirld be conducive
to durability ; and for unit purp.eie initead of returning
the flues titer the tweezes, the top ef the tense, 4Cd
the hottest flues were brought to the surface of .he 1:,- -.
and the cooler, or return flues were token to the
bottom
of the water. The water was admitted tre. th
moment,
and was gradually warmed as it rose, the epecfrtet,"!
in confect :2-ith intensely
heat being - imparted at the last '''''''''ea"'
by which means the 'bubbles of sites, .
vented from eccumtilatieg Were pile!
heated mend. In the next place the
furnaces or fire boxes, was unustri Capacity of the
height above the iueandeseent
Liao much more man
usual. The evaporating surface much greater then
Licit' 1Y large, and their
than thrie feet of evaporatinig in these boilers was
customary, there being no less
surface for every toeCof
for by arranging under
furnace bars. The process
as reserve' blewieg off was provided
water spaces,
off of brine and other detphooesi flues and furnaces, large
Ira for the collection and blowtng
The last. paper was , - t.
Steam Generator," „ 3 ' A Description of
or, by hr ~• , eeEvreux).
principle upon whiche. Boueg y
Tuts Lein r‘et,:i ~animr.ite - 1i....
~this steam (rater was barred
was that " be nn v fromt" their surfaces."
a tliaphrc
di, e ev
foilow that in
the
the evaporating : ai an6l"-o-fj',lssm-boileis, either
Constructionrof=t it turret aeccesarlly
ed should be extended to
its utmost Lath_ or the vrater should be ao divided, and
the sae end
by the ''
of obtaining the
expenditure of the least amount of fuel.
it!
evaporating surfaces be so
pr,ert;,lltteinslttcl
The steam generstor was described as to arrive at
eunt of steam
to consist of verti-
cal cylinders of wren gbh irt7rrateuthe i" ' -
isu a owleho-
inchoi diu=eter; the " , A .
per . put closed by a curved lid,
sisal end, said
e .etheattuaPcbed the usual steam and safety
u,,piovne:fheiecisie-esre, and other pipes, &e. The interier -
diaphragms at wrought iron, pierced
with a num . , •
,and having alternately con-
vex and concave • .They were suspended by,
iron rods at con distances apart. in Enda a man''
Qv- ontained a
bseciri series ot;!eaces hulce,
three intact with the heate-d eiterier, or
snbeerllasor tshet°t:obeiler. When any water was admitted
threugh the feed pipe it f.lt upon the uppor (convex)
disc, which had a teuelency to spread it to the periehrrY,
the large-st quantity falling through the pertotaeon in
the shape of globules; the arc,.nd diaphragm being
concave, tended to direct the fluid- from the circutn-
terence to the centre, and so on, until it any fluid
rea,:hed the bottom cif the cylinder, it mingled with a
thin film of water, in a high state et ebunitii.n. that
beiegehe hottest part of the hqili?r. Iz appeared, how.
ever, that in its transit through these dlephritgres, the
water was so divided, thet Exposing a very leree sur-
face to the caloric, it was trensto:ne d into team vitt),
great rapidity, and with great reneeray of fuel. Iba
boiler described had been worked for a long time et
Paris with great success, giving motion to a sterun-eneine
of two tierces power. The neosumption of ewe e,at
iteted to be very men, 7Fl9,bs at
v 4.,,
orprising
ngbeen
eeeeerted into !.team by 1821bg of' t,,at l•a
111 -
::Mhours,
under a pressure of tee eterosiee.ree
question was carefully
The cnemical part of the
ex-
amined, and it was sheen, that at that bbertpteatu!--e the
iron was exactly in the best cludition t
The prectica application ch a largeo (.
a,ri e strain.wns sub'
witted to the engineers, the et, ~
—c au, ..1)1. Itimiyg BoCL. 1:y proposed
the system ter small. boilers eed tinder circumstance' of
wanting to obtain a motive,.
power in situations of re-
stricted space, where nrtt coat wets a great object.
It was announced that
at the meeting of Tuesdey,
an,A
March 30th, the monthly ballot for I\l :enters would take
place, end the.followir Imre wcuid be real, " An Au-
count of the thainege of the town of Rtchuiond, Surrey.
under the Ea iithrlity of the Metropolitan Coulualz="o'aers
et! Sewers in 1851," by Mr. George Doneldson, Assoc.
Inst. C.E.

Her Itoptl
we are happy to state, continues in the enjoyment of
liighnEes the Dacbess of Giotto:niter
proved health at Gloucester house, Park-lone. The vene-
rable Duchess, now.the only turviving offspriog of King
George 111 , will complote het 76t4 Yeig Oa the 2-4,4 Ws
etWiPg tucAtb,