M 'Queen proceeded to town, and the work of casting a new wheel was under-, taken. It was completed on Tuesday, the 12th, and was landed in Ttmneka* within 24 hours of that time-^Mr. Cover lid's express having been^nkagecl to con vevy it from the foundry to Hsj^efctinatipn. The rapidity with which the .pasting Hvas executed is a feat showing what the firm of Kinciad, M 'Queen & Co. can do on an emergency. We will now give a descrip tion of the nrll, curbine, and self-acting tramway, with all 'machinery connected therewith. <■

The' machine consists of two batteries five stampers.- each. ..Egich battery is in a separate frame, aud there is a passage i betweeu them. The boxes are on the front and back delivery principle. The tailings from the back are carried round to the front in shoots cast on to the boxes. The door on the front is made to act as a distributor, so that the back dis charge falls on to the ripples without a rush, which is a common fault with back discharge machinery. The Btamps weiyh 5f cwt. each, and are on the revolving principle. The disks are wrought iron, steeled on the face, and are screwed on to the 'stamper-rods, The centre stamp in each box has a separate disk for working the self-feeding apparatus. The stamps drop 75 times a mi-iute. The cam shaft. is 4]r iv. in diameter, and is made in two lengthß joined in the centre by a clutch coupling, so that one battery can be. worked without the other. It is con structed ou the latest and most approved principle, which, from witnessing experi ments, we believe will work admirably. The material used in its composition iai? wrought iron, and it is steeled on the face. The guides for the stamper-rods, are of iron bu*k, fitted into v cast iron j brackets at each end. The quartz for the I stampers to work upon is provided by a self-feeding apparatus. The shoots are of wrought iron, supported on a spring regulated by the centre stampers. The hopper end rests' on hin«»esi' which allow them to work freely, and when operated upon the stone rolls steadily and equably into'th^ boxes. 