16G 



THE FLORIST AND POMOLOGIST. 



[ July, 



iron backed by wator, and traverses it three times from end to end, it must be most powerful. 

 Fig. 1 is a front view ; the lower door indicating the ashpit, the middle one the furnace, and 

 the upper being provided for facilitating the clearing-out of the soot. Fig. 2 shows the side, 

 and also the back, against which the flame strikes in the first instance, returning through the 

 two holes seen in fig. 1, and then passing under the arched dome to the back, and so into the 



Fig. 2. 



flue or chimney. This figure also shows the flow pipe at the top, and two returns at the back, 

 with three of the six bent connections uniting the different sections. Fig. 3 shows the four 

 sections of which the boiler is composed. 



Supposing such a boiler to be badly used — slated up with lime water, for instance, and in 

 time injured, — being made in four sections, the sides next the fire bars, which would be the 

 parts sure to suffer, could be replaced at a small cost. No bricks are required above the 



fire bars ; and even if it be convenient to surround it with bricks, such bricks would only 

 become warm, not hot. Every joint, being outside the boiler, is safe from the action of fire. 

 The only objection at present is, that having only 800 ft. of 4-in. pipe to work, it is 

 too powerful. It is fed with slack and cobbles mixed, costing abqut 6s. a ton, and yet the 

 ashpit door has almost always to be closed, and generally a heap of ashes is put against it to stop 

 the draught. I believe if all my boilers were on the same plan, I should save half my coal bill. 



MONTHLY CHRONICLE. 



HpUNE has been crowded with exhibitions. The Great Summer Show of the 

 gJjD Eoyal Horticultural Society, which occurred early in the month, was one 

 sg) of the finest assemblages of plants which has been seen for many years, 

 and was well attended. At this Show the Coleuses were first brought out 



