Experiments in Elementary Agriculture;
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What is a good test for lime? How is lime prepared?
Oper. Ref.: U. 8. Dept. Ag..Circ. 195, p. 15.
1. Use a small piece of stone thought to contain lime. Bonu and marble are good.
2. Place a drop of nitric or sulphuric acid on it. Use precau- tion with acids — poisonous and "burns". If it gives off bub- bles of carbonic acid gas, lime is present; otherwise none, or it is not good limestone to use.
3. Burn in a stove for a day, a stone containing lime; when thoroly burned, remove.
4. To test it, ...you may mix this lime with water and when the water settles, pour off and blow your breath into it with a straw. • Carbon dioxide turns clear limewater milky.
EXPERIMENT 73.
Obj. What effect has lime on flocculation of soils?
Oper.
1. Fill one-half of each of two glasses with rain water (100 c.
c). Place in one, 14 gram of slacked lime. Add to each tumbler one gram of powdered clay (sifted thru a 100 meshed soil sieve). Stir well, let s.ettle.
3. Pour off the water; examine the sediment in each from time to time.
What to read after Experiments in Elementary Agriculture;?
You can find similar books in the "Read Also" column, or choose other free books by Davis, William Harold. [from Old Catalog] to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
What is a good test for lime? How is lime prepared?
Oper. Ref.: U. 8. Dept. Ag..Circ. 195, p. 15.
1. Use a small piece of stone thought to contain lime. Bonu and marble are good.
2. Place a drop of nitric or sulphuric acid on it. Use precau- tion with acids — poisonous and "burns". If it gives off bub- bles of carbonic acid gas, lime is present; otherwise none, or it is not good limestone to use.
3. Burn in a stove for a day, a stone containing lime; when thoroly burned, remove.
4. To test it, ...you may mix this lime with water and when the water settles, pour off and blow your breath into it with a straw. • Carbon dioxide turns clear limewater milky.
EXPERIMENT 73.
Obj. What effect has lime on flocculation of soils?
Oper.
1. Fill one-half of each of two glasses with rain water (100 c.
c). Place in one, 14 gram of slacked lime. Add to each tumbler one gram of powdered clay (sifted thru a 100 meshed soil sieve). Stir well, let s.ettle.
3. Pour off the water; examine the sediment in each from time to time.
What to read after Experiments in Elementary Agriculture;?
You can find similar books in the "Read Also" column, or choose other free books by Davis, William Harold. [from Old Catalog] to read onlineMoreLess
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