This is a great book that is out of copyright.
A New and Rational System of Land Fertilisation and Physical Regeneration
By Dr. Julius Hensel
Table of Contents
Stone Meal as a Fertiliser
Stone Meal Manure
Contributions from Hensel’s Followers
Stone Meal Stone Fertilising
Letter to Mr. Schmitt
Letter by Mr. K. Utermohlen
The Stone Meal of Dr. Hensel
About Stone Meal Manure
What help can be given to the Hard-Pressed Farmers
The Rheinischer Courier-June 6, 1893
The Rheinischer Courier-June 29, 1893
The Neus Mannheimer Volkblatt
Iron Slag
Neus Mannheimer Volksblatt
Wiesbadener General Anzeiger
Meeting of Farmers and Friends of Agriculture Assembled on June 25, 1893
Stone Meal Fertilization from Viewpoint of Agricultural Chemistry
A Chapter for Chemists
Stone Meal as a Tobacco Fertilizer