The Principles of the Earth

The principles of phenomena on Earth according to Descartes

The Origin of Metals

Rene Descartes

The Nature of Fire

Rene Descartes

Fire Produced from Objects

Rene Descartes

Fire from Dried Leaves

Rene Descartes

How a Candle Burns

Rene Descartes

Article 102-108

Why Some Things Burn and Others Do Not

Rene Descartes

Articles 109-119

Gunpowder made of sulfur, saltpeter, and charcoal

Rene Descartes

Articles 116-119

Lamps that burn for a long time

Rene Descartes

Article 120-123

Burning, tasteless, and acidic waters

Rene Descartes

How is Glass Made?

Rene Descartes

Articles 129-132

Why is Glass Transparent?

Rene Descartes

Article 133-138

The Magnet

Rene Descartes

Article 139-144

The nature of the magnet

Rene Descartes

The Properties of Magnets

Rene Descartes

Article 146-149

How the virtual photons flow through the Earth

Rene Descartes

Articles 152-154

Why do 2 Magnets Attract Each Other?

Rene Descartes