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IMl'ROVED HOT WATER APPARATUS. 
ARTICLE V. 
IMPROVED HOT WATER APPARATUS, FOR PITS AND HOUSES. 
BY MR. MATTHIAS SAUL, SULYARD-STREET, LANCASTER. 
As much difference of opinion exists respecting the size and form of 
boilers best calculated for hot-water apparatuses, I have been induced 
to try the experiment of doing entirely without one, by introducing 
the pipes into the fire. The first experiment I made was by placing 
the lower pipe into the fire so that the water would pass through the 
flames ; next I placed two pipes in the fire so as not to pass over, but 
be forced back again : this appears to me to have an advantage over 
the air pipe, which conveyed the water through the fire, as the water 
is forced in those two pipes backward and forward, which gives a 
strong motion, working something like a pump, the hot water being 
forced forward, and the cold forced to the pipes in the fire. It ap- 
pears also to have another advantage : all matter or sediment which 
might accumulate in the pijjes is entirely prevented by the strong 
motion. There is a regular stroke of six inches, with a regular fire, 
but if the heat is increased, it will increase the stroke two or three 
inches. Perhaps you will consider my apparatus worthy of an early 
notice in the Register, that your readers may be induced to furnish 
you with tables of the temperature of the water in their different ap- 
paratuses, taken twelve feet frona the fire. 
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