S36 
Steam Engine, 
On Mr, Arthur Woolf’s improved apparatus^ applicable 
to Steam Engines and other purposes of art and manu- 
facture: including a description of two boilers now erect- 
ing at Messrs. Meux’s Brewery. 
MR. WOOLF’S improved apparatus consists, Firsts 
of two or more cylindrical vessels properly connected to- 
gether, and so disposed as to constitute a strong and fit 
receptacle for water, or any other fluid intended to be con- 
verted into steam, whether at the usual heats or at tempe- 
ratures and under pressures uncommonly high ; and also 
to present an extensive portion of convex surface to the 
current of flame, or heated air or vapour from a fire : Se- 
condly, of other cylindrical receptacles placed above these 
cylinders, and properly connected with them, for the pur- 
pose of containing water and steam, and for the reception, 
transmission, and useful application of the steam generat- 
ed from the heated water or other fluid i and. Thirdly, 
of a furnace so adapted to the cylindrical parts just men- 
tioned, as to cause the greater part of the surface of all 
and each of them, or as much of the said surface as may 
be convenient or desirable, to receive the direct action of 
the fire, or heated air and vapour. 
That our readers may be able fully to comprehend the 
way in which Mr, Woolf constructs his apparatus, we 
shall present some plans and views, with such a descrip- 
tion as will, we hope, convey a pretty correct idea of their 
nature. 
Fig. 1. (Plate II.) represents one of his boilers in its 
most simple form. It consists of eight tubes marked a^ 
made of cast iron or any other fit metal, which are each 
connected with the cylinder A placed above them, as 
shown in the side view fig. 2, in which the same letters 
refer to the same parts as in fig. 1, In fig. 2. is also 
shown the way in which the fire is made to act. The 
fuel rests on the bars at B, and the flame, heated air and 
vapour^ being reverberated from the part above the twt^ 
