De Rerum Dirennis

An Alchemy skill book: an old Direnni wizard recalls the famous mages of his clan.

De Rerum Dirennis is written by Vorian Direnni, a 611-year-old wizard of the ancient Altmer clan of the Direnni. Tired of hearing only about his family’s warriors and kings, he tells the stories of the clan’s lesser-known mages and alchemists, whose discoveries he believes changed history just as much. He ends with the hope that his own small contributions will be a stepping stone for future generations.

Skill book

De Rerum Dirennis is a Alchemy skill book. The first time you read a copy, your Alchemy skill goes up by one point – later copies of the same title don’t give anything extra, so there is no need to carry them around.

Book details

  • Author (in game): Vorian Direnni
  • Teaches: Alchemy (+1)
  • Weight: 1
  • Base value: 55 gold
  • Item ID: 0001AFC7

More Alchemy skill books

A Game at Dinner, Herbalist’s Guide to Skyrim, Mannimarco, King of Worms, Song of the Alchemists.

Value, weight and skill read from the Skyrim game files; locations from community-checked lists. The book text is summarised here in our own words – read the full text in game.

Where to find it

  • The Alchemist’s Camp, an unmarked spot above Evergreen Grove.
  • The Midden Dark beneath the College of Winterhold, on an alchemy lab just past the pit of skeletons.
  • Grave Concoctions in Falkreath, under some baskets in the back right corner.
  • Sinderion’s Field Laboratory in Blackreach, next to the crimson nirnroot.
  • Clearpine Pond, on the body of a Dunmer alchemist.
  • Dawnguard: Valerica’s laboratory in the Volkihar Ruins.

Lore notes

Quest reward from

Where to find it

Falkreath is the quiet forest town of southern Skyrim with a famously large graveyard – home of Jarl Siddgeir, the Dead Man’s Drink and a talking dog called Barbas.

Characters connected to it

Other books for this skill

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Archery
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Enchanting
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Two-handed
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A Two-handed skill book: a rowdy Nord saga about a hero rescuing his fallen friend.
One-handed
By Marobar Sul
A One-handed skill book: a Dwemer riddle-tale about knowing where to strike.
Speech
By Waughin Jarth
A Speech skill book: the final chapter of Decumus Scotti’s Valenwood adventure.
Sources checked: Skyrim game files (Skyrim.esm + strings, read 2026-10-11); Elder Scrolls Fandom book articles (locations)