FLORIDA STATE HORTICULTURAL SOCIETY. 
65 
cast iron pipe. Cast iron you may say 
lasts two or three times as long as the 
wrought iron. Lasting qualities are main¬ 
ly a question of putting it in place and 
proper care taken for its preservation. I 
have seen some common, cheap, spirally- 
welded pipe that was blackened and that 
must have been down fifteen or eighteen 
years, and there would be little patches 
here and there perfectly good while other 
portions had ceased even to be rust and 
had been absorbed by the ground. 
As to the size it is not a paying proposi¬ 
tion if you get less than three mch cast 
iron pipe. 
Mr. Stevens—I had an experience in 
laying steel pipe in 1890. We had to lav 
seven inch mains with three inch laterals. 
I stood up the pipe, sealing one end and 
filled it full of hot coal tar so that it 
touched every part of the interior, and 
then drained and laid away to cool. It 
coated that pipe so thoroughly that when 
the pipes were taken up ten years later 
they were sold for practically new pipe. 
The person who bought them made no 
complaint about paying a good price for 
them. I paid no attention to the outside 
whatever; only the inside. 
Mr. Temple—If you use the lake wat¬ 
er, of course that is high in tannic acid. 
Mr. Waite—All your lake waters cor¬ 
rode worse than the artesian waters, 
Mr. Temple—I have had no experience 
with the artesian waters, but I know the 
lake waters are very hard on pipes. 
Prof. Williams—What make of nozzle 
and what pressure do you have in your 
mains, Mr. Gillett? 
Mr. Gillett—I cto not know exactly 
what pressure my engineer is figuring on. 
My recollection is that he would have to 
maintain a pressure of 60 to 70 pounds. 
They had two or three nozzles there but 
I have not decided which I will use. 
The one I fancied most I do not know the 
name of. Never saw one just like it be¬ 
fore. 
Prof. Williams—Was it the Fish Tail? 
Mr. Gillett—Yes, I think it might be as 
it looks like that. 
Prof. Williams—In measuring the 
quantity of water that will come from the 
individual sprinklers, we find there is a 
great range in them and we are going to 
have some very interesting experiments. 
We will have that information out in the 
next four or five months. We measure the 
pressure at the sprinkler and measure the 
quantity of water that goes through at 
that pressure, and then measure the even¬ 
ness of the distribution under it. 
Mr. Penny—How much above the 
ground will you run your pipe? 
Mr. Gillett—That will depend upon 
how fast I can make the tree grow. 
Mr. Penny—How will you support this 
pipe ? 
Mr. Gillett—The first pipe I put in I 
will support with a strong stake driven 
down by the side of it and wire the pipe 
to it. Then as the trees throw out their 
branches I will fasten it to the tree. 
Mr. Temple—I like this plan as I think 
it is just as essential to put water on the 
leaves as it is on the ground. 
Prof. Williams—How far apart are 
your trees, Mr. Gillett? 
Mr. Gillett—They are 24 feet apart in 
squares ? 
Mir. Temple—It has been suggested 
that I ask Prof. Rolfs if it is not possible, 
in accordance with Mr. Gillett’s idea that 
he would wash the red spider off, that by 
5 
