The Sun.
London, England, 1867-04-12 00:00:00

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injection pipes if the engines have condensers. In
large vessels the donkey en gines should have a sepa-
rate boiler high above the water line, and communi-
cation with the main boilers. All vessels should have
a set of bilge pipes connecting every hold, and the en-
gine compartments with these pumps. As a security-
against fire. that there should be pumps on the upper
deck, fitted as force pump; and provided with a
sufficient length of hose to reach either extremity of
the vessel, and also provided with suction hose or
pipes from the sea ; and that the stowage of a shit:,
whether clone by contract or not, should be dens
tinder ins[ection of the e:.ptain of the ship, and
should be conducted under hi :own orders only.; and
he alone should be held rc +ponsib!e for the good
stowage of his ship. In Mimi to the fors•going
re.:ounnendations the coo aril recorded rarions suz-
gestions which they cone 13 !red deserving of codsi-
deration ; one of which vtrns that all communication
with the Sea should be' ally exposed to viegx.

. ,
Mr. Winn A M beggo L. .to state that many member%
of the profession di 1 ',tot agree with the sug:esti'ina
of the roport, and IJ3 said that he hinisAf was op-
pose:l to almost every one.
Mr. SCOTT RUSSELL explained that the council
did nbt intend that any action should be taken on
those suggestions without further consideration, and
ono of the main objects of the propo3ed royal com-
mission would be to consider the soundness of those
suggestions.
After a few remarks from Mr. Reed and Mr.
Grantham, the report was adopted.

Sir J. PAKINGTON said he regretted that his offi-
cial duties would prevent him from remaining all-
-101 get, as . he resigned the chair to Mr. Lloyd.
The reading of papers then commenced. The
first was " A. description of some tug-steenners for..:
- -=• -
the Godavery river" ,by Mr. J. R. Napier, -who"
I had constructed them so as to draw only six inches
of water.,

Mr. REED and Mr. SCOTT RUSSELL complimented
Mr. Napier on his achievement, and the latter ob,
served that it was the first time an iron awning
had been applied to give lightness and strength do a
boat.

Mr. N. BARNABY then read a paper " On the
stowage of merchant ships," in reference to a pas-
sage on the special report of the council. lie ex-
plained at some length the scientific principles on
which a ship's load ought to be placed, and said that
the behaviour of a merchant ship at sea depended
more on the stowage of the cargo than on the con-
struction of the ship. He contended that rules
should be given to the captain and to the packer as
to the way in which the cargo should be stowed..
Mr. WiGRAM observed that the chief difficulty
arose from the manner in which the cargo came in
to be loaded, a quantity of heavy goods being sent
to be shipped at the last.
An animated discussion ensued, in which Mr.
Scott Russell, Mr. Grantham, Sir E. Belcher, Mr.
Weston, and other gentlemen took part.
A paper " On the proper form of ships," was
then read by Mr. J. BOURNE.
Mr. J. REED read a paper " On certain cases of
weakness in iron ships" and pointed out several in-
stances of the erroneous application of mechanical
principles in the construction.
A paper contributed by M. FLACHAT, " On the
depth of ships," was next read.
Admiral ELLIOT read a paper " On the specialite
of ships of war ; or, the navy of the past, the pre-
sent, and the future," in which he contended that
the attempts to combine the qualities of all classes in
iron• plated ships were not likely to be practically
successful, and that it is desirable to maintain in
the service the different classes of ships that were
found serviceable in former naval warfare.
The four foregoing papers were discussed together,
Mr Scott Russell, Mr. Wigram, Mr. Reed, Sir E.
Belcher, and Mr. Dudgeon taking part in the dis-
cussion.
The meeting then adjourned at half-past four.
THE EVENING MEETING.
The proceedings were resumed at seven o'clock—
Sir E. Belcher in the chair.
Mr. M'GREGOR read a paper on " Some inven-
tions for marine populsion reinvented," in which he
noticed a great number of useless inventions for the •
Propultion ofzbiks.j4zll,l49hject 1.000 patents
had been obtalug44A4Nate-ProPrLion of which
patents were for*pliostd inventions the imprac-
tica.bility of which had been proved again and again.
Ile expressed regret that so much ingenuity and
labour should have been thrown away, and he said
that application at the Patent-office would have
quickly dispelled such illusions. In the discussion
of the paper,
Sir E. BELCHER stated from his own experience
that investigations at the patent office were far from
being so quickly made as assumed by Mr.'X'Gregor.
Other gentlemen complained of the difficulty of pro-
curing information respecting the nature of previous
inventions at the Patent-office, and urged the neces-
sity of an improved mode of reference.
Three papers of a technical character on the
"slip" of screw propellers were then read, and the
discussiOfl on them was taken together. The titles
of the papers were—." Some remarks on appare. nt
negative slip," by Mr. W. J.
" Apparent negative slip in screw p ,
Macquororoperillletrasn,k, tbny;
Mr. W. Fronde ; and " Relations of the screwthe dis-
to its
reserve cnrrents," by Mr. A. Rigg, jun. In
cussion Mr. Reed, Mr. Scott Russell, Mr. Napier,
Mr. Galloway, Sir E. Belcher, Mr. Bourne, Mr.
Grantham, and other gentlemen took part. One
of the points on which 'difference of opinion was
expressed was whether any advantage is gained by
placing the screw as far as practically possible from
the stern post, that plan having been recommended
by Mr. Froude. The general opinion appeared to
be that there is less vibration and greater speed in
that arrangement. Sir E. Belcher, however, men-
tioned a serious accident to the ship Phoenix in con-
sequence of the screw-shaft having been elongated.
Mr. REED then read a paper " On trials of steam-
ships on the measured mile." lie observed that trials
on the measured mile had often been condemned as
liable to error and to be rendered fallacious by various
means of "jockeying." He contended, however, that
for the primary objects for which the measured mile
was instituted, viz., to test the maximum amount of
steam-power, to try the utmost speed of the ship
under conditions by which it may be compared with
other ships, to ascertain the efficiency of different •
forms of propellers, and the speed of the same ship
at different times ; for these purposes the trial on
the measured mile when fairly, conducted was
superior to trials for several hours on the open sea.
He admitted that on many occasions fallacious re-
sults had been obtained by jockeying, but no such
tricks could be practised on her Majesty's ships, for
all the officers engaged in the trials were impartial,
aud had no object to serve in makine• the ships
appear to have greater or less speed thatithey really
possessed.
In a short discussion on the paper, Mr. Galloway,
Mr. Scott Russell, and Sir E. Belcher took part.
Another paper " On the impact of water against
a ship and on its direction and pressure," by Mr.
W. E. Soccombe' was read, and the meeting then
adjourned until this day.

Her Majesty's screw troopshipliaegera, Comman-
der J. Simpson, arrived at Portsmouth yesterday
morning from Malta and Gibraltar, having called in
at Plymouth Sound on her way up Channel, and
LindeLtnded theriturldi..liNi:eitau‘ii:rre:tiltbsive.alli)desn nyw
earned Il;'irlouuddebede,Rraa\fneirdeorn.s,lejett,hn
Her freight list oa arrival at Spithead
comprised Lieut. Ifon. IVE,.
ilit.erJpoil.ilsiief,e,olfiropmrollincortilina-;
jesty's ship Ocean, on promotion ; Lieut. Praed,
valided ; Mr. llopkin, engineer, lwr Mitahjeisttt(y.,igad'ajimetisstetlly:nie,ta.:
M
Caradoc; Mr. Stanley, engineer, her Majesty'sshipl3
laelfixaniiiioslidre)gsm.iteriso':lBl'2rdigli3ll3:ezeicruirry;:is'l':;2laa;:ljayc:ittt()-Isall°Blira,lei'lliiiirsi:.:lsitlAll;ira.jile'rBNtil3lhitliaYeell).lisilViln:silli).Bitaitilpaidr; andaA naval
Alegfera at Portsmouth dockyard yesterday
leaveafter-
ndreturned stores, &c.
Portsmouth this
illTo°rlni'in'ginfdort\hVeoosila‘iyli)cliwll
,ito la

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