…These observations led the Alchemists to conceive
a set of qualities for the Magical Elements
which would explain their transmutation from one to the other.
Earth is Cold and Dry
Water is Cold and Moist
Air is Moist and Hot
Fire is Hot and Dry
Make Earth Hot to get Fire
Make Earth Moist to get Water.
It can be seen that Earth cannot become Air
without first becoming Fire or Water and vice versa.
Similarly, Fire cannot become Water
without first becoming Earth or Air and vice versa.
All of which… is a very subtle conception for ‘primitives’.