Many literatures regarding mineral kingdom medicines are present in our homeopathic world but there are some interesting and precious books which need our attention. Among those books, Text Book of Homoeopathic Materia Medica by Otto Leeser is a good source to gain knowledge about remedies from mineral kingdom. This book offers an in-depth review of the mineral remedies in conformity with scientific chemistry, and the known effects of remedies both as poisonings and through provings. The book is focused on the constitutional as well as numerous mineral remedies, their biochemistry and their clinical picture. The unique phenomenon of the law of Octaves is also being explained by Dr Otto Lesser in this book, as each element in a group exhibited similar drug effects during their proving. It is based on the study of drugs analysing the groups bearing the similar symptomatology, as Alkalis (including Potassium, Sodium, Lithium, Ammonium, Magnesium, Calcium, Strontium, Barium), Halogens, Sulphur group, Nitrogen group, Boron-Aluminium group, Carbon group, Heavy metals, etc.