1 e52j 



rotary motion, at a certain increase of speed, is connnuTiicated 

 through the wheel, r, to the pinion, w, fixed upon the shaft, u u, 

 which last-named shaft has its bearings (v v) attached to the 

 movable frame, i i. On the shaft, u u, are placed a series of 

 plates or projections, iixed at regular distances. Or such plates 

 or prtvjections, with their ploughs, may be placed upon separate 

 .shafts, each with its own proper gearing; but it is preferred to 

 place them on one shaft. These plates or projections have affixed 

 to each of them several ploughs, which, in revolving, penetrate 

 the soil, and by their mouldboards elevate and turn over portions 

 thereof: a a are the plates or projections fixed upon the shaft, u. 

 Each plate («') has three arms or piolongations (6 i b), which 

 terminate in the radial direction shown; a further prolongation 

 (cf d') is carried obliquely upon each of these arras. Upon the 

 plate and projections thus constructed is affixed the tilling 

 apparatus, which consists, first, of the pait, e, which acts the 



THE BROCK MONUMENT. 



41 



part of the mouldboard or tura-furrow in the common plough; 

 and it is to be fixed by screw bolts, or otherwise, to the 

 prolongation, d' d'. To the fore part of this mouldboard (e e) is 

 affixed a bar of wrought iron, which is also furnished with a lug, 

 by which it is attached to the plate by means of screw bolts, or 

 otherwise ; the bar, thus secured, forms a head or share-bearer, 

 as in many common ploughs. To the fore part of the bar the 

 share is adapted, and fixed by its socket The mouldboard, and 

 also the share, may be varied in form. An adjustable fore-cutter 

 or coulter is affixed in front of each share. It will be seen, that 

 not only the ploughs which are set in the same plane around the 

 axis follow each other into action, but that the ploughs of the 

 other sets (wliich are affixed around the axis in parallel planes) 

 are arranged and come into action so that two plough-shares will 

 not strike the earth at the same instant. 



AKCHITECTURAIi NOTICES. 



The Brock Alonumenti 



The Committee for the Erection of the Brock Monument, on 

 the Queenston Heights, invited Architects to compete in the 

 preparation of Designs, by offering a premium of £25 currency 

 to the successful competitor, |^whose design should be adopted. 



The meeting of the Committee took place, to receive the 

 designs, on the 2nd of last month, at Queenston, and from thence 

 adjourned to the 10th ult., at the Parliament Buiidirgj, Toronto^ 

 where a large meeting of the Committee took place, viz, : His 



