1 34 Que7ies, Answers, Rem irhs, SjC. 
structed flue, you could advance to any degree thai inijjlit be icquired. Our 
houses are so contrived, that we have full coinniaiid of the internal air, with- 
out in the least distressing the flues in the most severe weather, and uiy fore- 
man has repeatedly told mc, that the only fire requiring attention, more than 
once in the evening-, is that attached to the hot water pits, I have offered 
liini a man to assist him, but he has always refused, saying, lie had no cause to 
risit the fires more than once in the evening-, except in very severe weather. 
There are flues in the garden, erected before 1 came to Chatsworth, that almost 
burn one end of the house, while the other is nearly cold ; but these I do not now 
use for early forcing, and therefore, have not altered them. All the flues 1 
have built, give out the heat in so uniform a manner, that there is no difference 
between one end of the house and the other, and by the plan of having an open 
canal of water at the front of the dues, to give out moisture, according to the 
heat required, not the greatest action of the flues, can in the least injure ve- 
getation ; being a self-actor, it evaporates more or less, as the decrease or 
increase of fire becomes necessary. And on entering the house, after a severe 
frosty night, not the slightest luiplecsantness is perceptible. This caual is 
made of block-tin, and when properly painted, will last a great number of years. 
Allow me to add, also, that the expense of putting \ip the hot water apparatus, 
for these two pits, cost £50, while the two pits adjoining, of exactly the same 
size in every respect, cost altogether, including their erection, only £63! ! 
Q. — Do you think there is no saving then in fuel, by heating- a house with hot 
water, if there are pipes sufficient for the purpose? 
A. — Most certainly not ; and it is only deluding the public by informing- them 
that there is. If you could show me .50 gallons of water heated with a candle, 
] should believe it; the fact is, a certain quantity of fire can only heat a given 
quantity of materials, providing the artitde heated, does not ignite or ferment; 
and as the article gives out its heat, according to thesituation in which it is pla- 
ced, it must, necessarily, have a supply adequate to the co-operation, if it is to 
maintain a uniform degree of heat ; for instance: — a pipe, filled with boiling- 
water, passed through a heated oven, would require but little fire to keep it 
boiling; while the same pipe, passed through a barrel of ice, would require a 
much greater quantity. It is precisely the same with a hot- house — there must 
be a s\ipply of fuel equal to the demand, in whatever way it is applied ; and by 
husbanding the heat, as we can do, in the chamber beneath, not the smallest 
portion of it is lost fro,n the flues. Having satisfactorily, I hope, answered 
your queries about the pits, we will, if you please, walk up and look at the new 
range of houses. 
Q. — I perceive these houses are constructed of wood : — I must confess, that after 
the experience of the wooden houses and smoke flues at Chiswick, I am ratlur 
surprised to see you erect them here ? 
A. — I hope, sir, you are not comparing these houses with those at Chiswick. Ex - 
amine them, and you will be convinced the comparison is absurd, Do you not 
perceive that these houses admit as much of the morning and afternoon sun, as 
though they were constructed of metal; do you not also see by the manner in 
which the sash-bars and rafters are made, that strength, durability, and light- 
ness, are combined to a greater degree, than yOu ever saw in a range of houses 
composed of wood before. Had you been a practical man, it would have been 
impossible for you to have entered this range, without being at once struck 
with what I have explained. 
Q. — Are all the houses in this range heated with fire-flues? 
A. — They are, having a similar canal of water in the front, to those I explained 
