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

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injection pipes if the engines have condensers. It

large vessels the donkey engines should have a sepa-

-
rate boiler high above the water line, and eonimuni-

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 pumps, 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 ship,

whether done by contract or not, should be done

under inspection of the captain of the ship, and
should be conducted under his own orders only ; and
he alone should be held responsible for the good

stowage of his ship. In addition to the foregoing

recommendations the council recorded various sug-

gestions which they considered deserving of consi-
deration ; one of which was that all communication
with the sea should be fully exposed to view.
Mr. WIGRAM begged to statethat many members
of the profession did not agree with the suggestions
of the report, and he said that he himself was op-

posed to almost every one.
Mr. SCOTT RUSSELL explained that the council
did not intend that any action should be taken on
those suggestions without further consideration, and

one of the main objects of the proposed 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 any
longer, and he resigned the chair to Mr. Lloyd.
The reading of papers then commenced. The
first was " A description of some tug-steamers for
the Godavery river" by Mr. J. R. Napier, who
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 to 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. He ex-
wthheich behaviour
ship's loofa da oughtere ht oa
nbte
splaced,
saenad
plamed at some length the scientific principles on
smtroureetolounthoef sttohwe asgheipo.f. thlefecaerognotetnhdanedo nt
htahte
depended
deotaat
re: lel
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. FLACIIAT, " On the
depth of ship," 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. Dulgeon 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. APGREGOR read a paper on " Some inven-
tions for marine populsion reinvented," in which lie
noticed a great number of useless inventions for the
propulsion of ships,
for which object 1,000 patents
had been obtained, a great proportion of which
patents were for supposed inventions the imprac-
ticability of which had been proved again and again.
He 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.:M'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
discussion on them was taken together. The titles
of the papers were—" Some remarks on apparent
negative slip," by Mr. W. J. Macquoron Rankin;
" Apparent negative slip in screw propellers," 13y
Mr. W. Froude ; and " Relations of the screw opus
reserve currents," by Mr. A. Rigg, jun. In the -
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. Fronde. 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." He observed that trials
on the measured mile had often been condemned as
liable to error and to be renderedfallacious 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,
and had no object to serve in making the ships
appear to have greater or less speed than they 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. Seccombe, was read, and the meeting then
adjourned until this day.

-----
Her Majesty's screw troopship Ma2gera, Comman-
der J. Simpson, arrived at Portsmouth called in
sterday
morning from Malta and Gibraltar, having
nnel, and
at Plymouth Sound on her way up Cha
landed there Lieuts. Denny and Fronde, and seven
soldiers. Her freight list on arrival at Spithead
comprised Lieut. Hon. W. L. Jolliffe, from her Ma-
jesty's ship Ocean, on promotion ; Lieut. Praed,
from her Majesty's ship Enterpr.ise, on promotion ;
Mr. Spry, master, her Majesty ship Racer, in-
valided ; Mr. Hopkiii, engineer, her Majesty's ship
Caradoc ; Mr. Stanley, engineer, her Majesty's ship
Highflyer; Mr. Nicholls, midshipman, her Majesty's
Victoria ; 127 naval and marine invalids and time-
expired men ; Quartermaster Nally, B,lth Rq.4itnent,
and 32 military invalids. Allletahvaeerd p military and naval
passengers and invalids were landed from the
Mc
the
shiprts will
outlidockyyoersttsemr yesterday
hthis
a f ter-
noon,g
morningranda f a
for r h '
Woolwich, to land returned stores, &c.

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