There is an explanation of the symbols here, but it's pretty much bogus.
By which i mean this is totally alchemical.

We have the scallop shell of St. James de Compostella.
We have the Caput Ethiops.
And the bear carrying a bound crate!

The Ethiop is the black (burnt) face; the black matter with which we begin our work - the black madonna.

You all know the scallop shell from Fulcanelli.
And you know the bear with the bound crate from him as well, only there it was a boat (Argo) that carried the crate instead of a bear (Arktos).

Recall the saying, "Gold cometh from the north (Arctic)"

late 14c., artik, from O.Fr. artique, from M.L. articus, from L. arcticus, from Gk. arktikos "of the north," lit. "of the (constellation) Bear," from arktos "bear," the Bear being a northerly constellation.

What is being said here? Argo, Arktos, Arctic?
And isn't there a pot of gold at the end of a rainbow (Arc/h).

Gk. arkhaios "ancient," from arkhe "beginning".
We seek our materia from Old Saturn.

"Et in Arcadia ego"

by Nicolas (Victorious stone) Poussin (fish). (Isn't Christ, the Victorious Stone, symbolised by the fish)

I've discovered from my studies of Egyptian mythology that this is a very specific fish - the Nile Perch, Lates Niloticus. Lates is derived from the Latin "latere" which means "hidden". Just as these Arcana are /mean "hidden"; just as our hidden stone which needs rectifying (VITRIOL).

1540s, from L. arcanus "secret, hidden," from arcere "close up, enclose, contain," from arca "chest, box," from PIE *ark- "to hold, contain, guard" (cf. Gk. arkos "defense," arkein "to ward off;" Arm. argel "obstacle;" Lith. raktas "key," rakinti "to shut, lock").

Perun (Slavic Jupiter/Zeus/Ammon) is strongly correlated with the near-identical Perkūnas/Perkons from Baltic mythology, suggesting the existence of an ancestral Balto-Slavic deity, which ultimately derives from the Proto-Indo European thunder god whose original name has been reconstructed as Perkwunos. The root *perkwu originally probably meant oak, but in Proto-Slavic this evolved into per- meaning "to strike, to slay".

In the ancient religions there exists this repetitive theme - a battle between a thunder/lightning god of the sky and a serpent/dragon of the earth or underworld. In the Slavic version, Perun is the thunder god who, just as Zeus-Jupiter, is related to, or IS, the Oak tree, or the Eagle in the top of the tree; and the serpent-dragon is wrapped around the base/roots. In the Slavic version, this serpent is named Veles, to wit, wels = wool! So there we have our oak and our fleece.
The same can be said of the Bible/Genesis version - Jehovah-Enlil is a sky god and Ea is the water/earth god - the serpent that climbs the tree and tempts Eve. And Jehovah curses him, casts him down and makes him crawl on his belly... same as the other myths - the Thunder-god attacks the serpent with his lightning bolts and always wins, sending the serpent below. But the serpent is always reborn. But the serpent isn't bad or evil - it is earth as opposed to heaven; water as opposed to fire; matter as opposed to spirit.
The fight always begins with Veles stealing something from Perun... a wife, daughter, cattle... this is our Magnet attracting the aerial nitre. Velja also means "great" - just like Magnum means great and magnet, so is Veles/wool our magnet to the oak. And when it has attracted the oak, the serpent/wool dies, but is reborn - Vlaise/Blaise - "white and shining".

See other ram-horned serpents: