We are enabled to give an illustration of this boiler, and from an inspection of its mechanism, have reached the conclusion that it appears likely to answer well the end for which it has been designed. The inventors consider it to be the most unique and perfect thing of its kind that has ever been brought to the notice of the horticultural world, and in all the attempts to bring it into action, it has answered far beyond their most sanguine expectations. Its durability is one special feature, and the patentees are prepared to guarantee and insure by policy its usefulness and safety for a space of 15 years.

Absolute exemption from failure is also claimed for it on the ground that it is constructed in two halves; the construction and expansion are entirely neutralised; and should any unforeseen accident occur to one half, that portion may be detached and removed, without in any way interfering with the working of the other half. Thus it is termed "indestructible." The shutting-off of either half from active work is accomplished by means of an improved gun-metal screw, valves and chambers.

The arrangements for removing sediment are so perfect and simple, that any ordinary labourer may clean out the boiler at any time by drawing the water from the apparatus, or removing a single brick in the furnace. This is stated to be an advantage no other boiler used for horticultural purposes can lay claim to. The boiler being constructed of cast iron, is considered more durable in every respect than if formed of wrought iron; and being in sections, it may be passed through any doorway that is 18 inches in width.