SIR, -- It turns out that the great demonstration was held in a room capable of holding perhaps from one hundred and fifty to two hundred people, if well crammed; this the party endeavoured to do by canvassing all the four points of the compass for those who are fond of appearing on the platform and spouting.  The great gun was taken from Scaleby, whose report was to strike terror to the hearts of the Tory electors who were present; the ex-M.P. for Cardigan, who had his coach upset in 1874, and who Mr. FLETCHER (the leader of the party in the west) did not know what he wanted at the meeting, but when he was on his legs told them he was disappointed with it, no doubt thinking, as I did, it was a clumsy attempt at a demonstration, and was not so enthusiastic as he expected to find it, and that if he had his eye on it the people did not think he was the right man.  Of course if was necessary to have the jocular Bart. from Brayton, for without him the meeting would be flat, stale, and unprofitable.  A host of other minor guns were present, but if I were to go through them it would make this letter too long, and be encroaching too much on your good nature to ask you to insert it; suffice it to say (borrowing the words of a showman), such a combination of talent is rarely ever brought together as on this occasion.  But to commence with the aspirant for honours from Scaleby, surely the party is in great need of talent when Mr. ALLISON has always to be sent for to chuckle and crow, and run down, in no measured terms, the Tory party.  Was his speech an honest one?  He told a lot of balderdash (as Mr. John BRIGHT would call it), extending over a period of a hundred years.  Did it not suit his cards to say what, he ought to know, had occurred in our own time, and the little he has been engaged in the political world?  Not so, he fired off all his powder and shot and never made a mark.  If I had been allowed to have had my say, but I dared not attempt, because, from experience, I know the sort of treatment I would have received if I had thrown a shell into the camp.  But I will say this, that when young men go so far from home to enlighten their fellow creatures, they ought at least to be guarded in their language.  The rejected of Cardigan could tell them very little, and did not bring down the house.  Sir WILFRID was full of jokes, and this pleased the audience; but to say it was a successful demonstration might please the audience; but to say it was a successful demonstration might please the Radicals of the west, but will give no uneasiness to the Conservatives.