The wood is inclosed, in a tank kept hot by a steam jacket which surrounds it, as shown.
It may also be caused by the cylinder being unduly cooled, as from water accumulating in a steam jacket.
The working cylinder is in the form of a liner to the cylinder, thus forming the steam jacket, with a view to future renewal.
It is provided with a steam jacket; and the two ports are 45 millimeters in width by 200 in length.
The processes employed are very simple, the fresh milk being put into a great copper tank with a steam jacket.