What can you say of the use of whole bones?
Bones consist, when dried, of about one third organic matter, and two thirds inorganic matter.
The organic matter consists chiefly of gelatine—a compound containing nitrogen.
The inorganic part is chiefly phosphate of lime.
Hence, we see that bones are excellent, as both organic and mineral manure. The organic part, containing nitrogen, forms ammonia, and the inorganic part supplies the much needed phosphoric acid to the soil.
Liebig says that, as a producer of ammonia, 100 lbs. of dry bones are equivalent to 250 lbs. of human urine.
How does the value of bone dust compare with that of broken bones?
What is the reason of the superiority of bone dust?
How is bone-black made?
Of what does it consist?