570 Report of the Trials of Plou(/hs, Barrotos, ^r., at HulL 
Fig. 66. — View of tie Sliare and Sliare-shoft of Baveijs One-way Single- 
furroio Plough, No. 6G0. 
Fig. 57. — View of Coulter, Lever, tCc. 
Fig. 58. — Longitudinal Section of the Beam, ivith the Coulter-hoss and' 
Set Screics, &c. 
Fig. 59. — Elevation of Share and Share-shaft. 
Class XII. — Double-furkow One-way^Plough. 
Mr. John Davey was here again the only exhibitor. His- 
"Climax" double-furrow, turn-wrest, or one-way plough (No. 661)' 
merits, however, our praise as a highly ingenious, well-con- 
structed implement, which would be very hard to beat. To 
effect double-furrow one-way ploughing it is necessary to have 
four bodies — two in work and the others suspended ; to make 
these change places with ease, to apply simple mechanical arrange- 
ments for raising the ploughs out of work, and turning the plough 
at the headlands, and to lock the fore-wheel in work, are points 
upon which great labour and ingenuity have been expended, and 
the result is one of the most perfect implements we have ever 
seen. We trust that, by the help of our illustrations, we shall 
be able to convey some idea of the plough : — 
