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Miselnos 
te extraordinary (owing to the success 
6f the Mediaval Exhibition) had yielded 
a net profit of more than 6001. It would, 
therefore, appear that the Society for 
many a year has never been in so pro- 
sperous a condition as it now is. With 
e view of aiding the Great Exhibition, 
the council have ofered various prizes 
and medals for treatises illustrating its 
uses and advantages. A prospectus of the 
prizes may be obtained of the secretary. 
TRIENNIzA EXHIBIoT or THsiE ROYAL 
Duauw SoCIETY.-It will be admitted by 
all who have had experience of the exhi- 
bitions of manufactures of this Society, 
that the exhibition of this year is very far 
superior in every respect to any of its 
predecessors. It is far more extensive, 
more comprehensive, and far more 
catholic,-now including the productions 
of all countries for the first time, whereas 
hitherto the Society thought it would be 
Sbt course to improve its own manu- 
f   r   by forbidding Irishmen to study 
in its wells any productions but their 
own. The example of the Exhibition of 
185 taught them better, and the Society 
has every reason to rejoice that it has 
followed it. In fact, this exhibition is a 
sort of "counterpart in little" of the 
monster show in 1851, comprehending 
raw produce and materials, machinery, 
manufactures, and fine aft. Excepting 
the Strictly agricultural produce, the de- 
partment of raw materials is very li- 
mited. The machinery-for the most 
part exhibited in motion-has deservedly 
excited great interest, especially that 
which illustrated the process of pre- 
paing flax. We were glad to see that 
Mr.W Whitworth, of Manchester, had sent 
one of his beautiful planing machines, 
and also his knitting machine, which 
imitates in a most simple and ingenious 
way the action of knitting by the hand. 
Mr. Edmonds exhibited his railway ticket- 
printing and counting machine, which 
prints and counts at the rate of 400 
tickets 6 miinute  A locomtiv, with a 
sort of instantaneously stopping  drag, 
was shewn in m ion out the building. 
Mr. Fairburn, too, sent Specimens of 
various machinery, and we believe gener- 
ously lent a steam-engine to work it 
The variety of manufactures was COD- 
siderable, more so than we have w 
nessed in any previous exhibition, an& 
in respect of those produetions which are 
almost wholly native, such as poplins 
and tabarets, and the manufacture from 
flax, was highly creditable. If Belfast 
properly bestir itself for '1, its exhibition 
of flax productions, taken as a whole, is 
likely to be unique. Excepting guns, and 
carriages, the solid manufactures ex- 
hibit   at Dublin were chiefly old ac- 
quaintances, from the A delphi exhibitions 
in London, from Birmingham, and frot 
Manchester. Not being able to be very 
stringent in their rules for punctuality, 
many articles were sent in after time, and 
occasioned both confusion and disorder 
in the arrangement,-if arrangement it 
could be called, which mixed together 
linens and goldsmiths' work, embroidery 
and castor-oil. We were glad to see that 
the exhibition was thronged with visitors, 
and we heard that it was likely to repay 
the outlay which had been made in form- 
ing the collection. The occasion of this 
exhibition induced the Royal Commis- 
sioners for '51 to send a deputation, in 
order formally to organise the Local Com- 
mittee for Dublin, A very full and en- 
thusiastic meeting was held in the theatre 
of the Institution and an influential com- 
mittee formed, which we hope will exert 
itself to see that Irish industry takes its 
proper place in the great Exhibition. 
There can be no doubt that this, the 
most successful of the triennial exhibi- 
tions that have been held in Dublin, will 
be an excellent preparation both to exhi- 
bitors and visitors for the greater show 
in 1851. The Exhibition closed l6th Au- 
gust, when the prizes were distributed in 
the presence of Lord Clarendon. 
-a1  llantous. 
The PnROGEss of the GREAT EXHIBI- 
'rio is in the highest degree satisfactory. 
The iron castings for the columns of Mr. 
Paxton's chrystal palace are being de- 
livered thus early on the ground, and in 
a week or two a thousand men will be in 
busy operation. The demands for space 
are pouring into the Executive, and we 
believe that the Manchester Committee 
has received a guarantee assuring it 
10,000 superficial feet to the representa- 
tion of its machinery. Meetings of the 
metropolitan local commissioners have 
been held at the Westminster Palace; 
the demands for space in the metro 
polis were examined by them, and where 
any department was found deficient the 
utmost alacrity and desire were mani- 
fested to supply the hiatuses. The space 
demanded by the Metropolitan Commit- 
tees up to August 1, is 27,774 superficial 
feet of floor or table space, and q4,f3 
superficial feet of wall space, made by 
609 Exhibitors. The Commissioners havre