Professor Athanasius Bly, father of Severus Bly, grandfather of the infamous S. Rowling Bly, was the head of the Classics Department at Miskatonic University with a Doctorate in the subject and Batchelors in Psychology and Metaphysics (the former under which he was the pupil of one Harkness Locrian). 

Bly was fascinated with unusual texts, in fact being one of the advocates for the full translation various Latin manuscripts in the Archives of Miskatonic, including five of note, all but the third and last of which were from his personal collection: The Liber Victori Caecilii, Sapienta Maglorum, Othuum Omnicia (from the library of a mysterious Innsmouth patron), the Liber Alsophocis (known in occult circles as the Black Tome), and the legendary Liber Ivonis. This was mostly for scholarly reasons, although Bly did have an unhealthy fascination with Sylvanus' ravings. The relatively short passage, carven on a glass globe across from a silver mirror involves the invocation of phasmati lamiae aeri: "Blood-drinking spirits of the aether", better known by the title given to them by Joachim Feery: "starre vampyres".

Language: Old Latin and some Falsican, reversed
Author: Extracted from the Liber Victori Caecilii of Victor Sylvanus Caecilius by Dr. Athanasius Bly
Study Time: Spot or Idea roll to notice symbols in mirror, Know to recognise, 2 wks. to translate from early Latin
Constructed: c. 1892

Spells: Call Star Vampire, cast iff* stars on inner globe when reflected correspond to the night sky.
Sanity Loss: 1/1D2 to see reflected text (induces unease), 1D2/1D4 to read whole text (reader hears faint, mental voices reciting text), 1D3/1D6 to decipher part of text (strange familiarity, acute unease, vertigo), 2D3/2D6 to decipher whole text in its presence (revulsion, disassociation, loss of consciousness for 2D100 minutes).

*"Iff" is a scientific term meaning "if and only if".