r
6 Kentucky Extension Circular N0. 174
I ` a strong frame of a truck. The rock is delivered from the first
to the second machine by an elevator. The outfit is shown in the
accompanying illustration.
. 3. BURNING LIME.
It has been found by keeping cost records that where wood
is plentiful, lime may be burned as cheaply as it can be ground.
Records on 4 kilns, representing 230 tons of limestone show an I
average cost of $2.18 per ton, with a range t`rom $1.90 to $2.47
per ton. One ton of fresh burned lime does the duty of two tons
i of ground limestone.
Plans and directions for building and burning a liinekiln
are given herein. If larger drawings are desired, a set will be 1
furnished for 10 cents to cover cost of making the blueprints.
4. USE OF MARLS.
t
Marls of good quality have been discovered in the following ,
“ counties: Adair, Allen, Barren, Bath. Breckinridge, Bullitt. I ,
Caldwell, Clark, Estill, Fleming, Garrard, Grant. Grayson. ` ,
Green, Henry, Jefferson, Laruc, Lewis, Lincoln, Madison, Mar-  
ion, Mason, Meade, Monroe, llontgomery, Nelson, Oldham. l’n- ,,
laski, Russell, Shelby, Taylor, Todd. Trimble, \\'arren, \\'ashing- H
ton and \Vayne. i ,,
I A marl might be called an impure limestone that has not ,1
’ solidified. The marls thus far discovered have about half the A
value of a good grade of limestone. They are soft and can be
handled with pick and shovel and spread without grinding. Il
For details concerning marls, how to recognize them and how to W
tell good ones from poor ones, ask for Experiment Station (`ir- il
‘ cular No. 32 on the Maris of Kentucky. Maris occur on hun— _ 3,
dreds of farms whose owners wish to use limestone or have been  
using it, but have never known of their presence. th
In one ease a deposit 15 feet thick was found in the barn- W
yard of a farmer who wanted limestone but could not get. it i
except at great expense. In another case a man had limed his in
land the second time with ground limest one and had on his farm in`
. Ii