252 REPORT 4, UNITED STATES ENTOMOLOGICAL COMMISSION. 
top of tho boiler, at some point between its rear end and tbe heater, E, a perpendicular 
pipe, C, is inserted into it, which pipe should be long enough to carry its upper end 
to a height somewhat above the tallest cotton-plants. The pipe, C, is provided with 
a stop-cock, D, and connects &t its upper extremity with a cross-pipe, M, of the form 
as shown at Fig. 2, and to approach very near the ground at both its ends. In that 
portion of the pipe, M, that is horizontal are two stop-cocks, one upon either side of 
the point of connection with pipe, C, which serves the purpose of stopping the issue 
of steam either entirely, or upon one side only of the machine. At a point near and 
below the flexures or elbows of the pipe, M, at which it turns towards the ground, on 
both sides of the machine, and from this point down to the two extremities of the 
said pipe, at short intervals, are inserted small short pipes, a, which, diminishing iu 
size to their extremities, where they come very nearly to a x>oint, serve as vents or 
jets for the escaping steam when the machine is iu operation. Placed alongside the 
pipe, M, in front of it, and in contact wifch it everywhere, excepting only for a little 
space nearits top part, where it bends forward, as shown at Fig. 1, is another pipe, 
K, exactly corresponding with pipe, M, in size and shape, and provided with the 
same number of precisely similar jet-pipes, a, that are so placed as to be exactly over 
the corresponding jets in pipe, M, that is to say, at their extremities, and in the 
closest j)ossible contact therewith. The object of this is to insure the dripping of 
the oil over the orifices from which the steam escapes. Over the center of the upper 
and horizontal section of pipe, K, and connecting therewith by a short pipe, d, is placed 
the reservoir A for oil. Stop-cocks in the pipe, K, near to and upon each side of #he 
pipe, d, prevent a flow of oil down either end of said pipe, K, or permit it to flow into 
both or only one end, as occasion may require, at the pleasure of the operator. A plat- 
form in front of the boiler or furnace is provided on which a supply of fuel may be 
carried, a light railing or lattice-guard on the sides of the platform protecting it. A 
driver's seat, P, is placed on this platform, under which a vessel of oil may be carried, 
as well as other things needed in the operation of the machine. This invention may 
be of any dimensions, to be drawn by one or more horses. " * 
