His machinery consists of a locomotive engine, weighing only three-and-a-half tons, and of a twenty-six horse power. It was designed by Mr. Gooch. It has a double capstan attached, “removable, when the engine is required for other purposes.” His lordship does not indicate any of these; but we may fairly imagine that his farm-engine will possess the same versatile genius as the inventions which have preceded it. His description of this machinery is very brief, clear, and without the use of any technical terms. “The engine moves across the centre of the field on a light, portable railway. The ploughs advance and recede on either side of the railway, at right angles to it. “The ploughs employed consist of four ordinary, and four subsoil ploughs, fixed in a frame. It is directed by a person standing upon a small platform. “Two such ploughs, one on either side the railway, alternately advance and recede; the advancing plough working, the other idle until it regains its proper position for ploughing the next four furrows. On the completion of the four furrows both ways, the engine and side frames advance each three feet. “The ploughs are attached to an endless chain, one hundred and fifty yards in length. They can be detached at pleasure, or shifted from one side of the chain to the other. They travel at the rate of _five miles an hour_. Provision is made in case they strike against any impediment.” Arrangements are also made to suit irregularly shaped fields. The full power of the engine is not exerted with the ploughs, as thus described; and the number of blades can be increased if desirable. And now for the next statement, which brings us to a most important consideration. “In the present state of things, it is difficult to form a correct estimate of the value of the invention in a commercial point of view. I will only say that a machine of the power, and with the arrangement described, would perform the work usually done by _sixteen_ ploughs, driven by as many men, and drawn by thirty-two horses. Requiring itself the attendance of eight men, and a horse to draw the water for the engine, it would thus save the labour of thirty-one horses and eight men. Against this must be set an expense of five shillings a day for coals.”