Lyric discussion by Brat Moj 

Cover art for The Fountain Of Lamneth lyrics by Rush

The song is also liberally sprinkled with references to the drug LSD.

"Draw another goblet from the cask of forty-three."

^ That being the main one, LSD was discovered/synthesized in 1943 by a Brazilian scientist.

If that is the "main" reference to LSD then I feel compelled to dismiss your original statement. "Liberally sprinkled"? Not seeing it here.

If you want drug references, A Passage To Bangkok provides plenty.

The band members freely admitted in at least one interview to experimenting with drugs but Alex said it "was all so smokey he couldn't remember the result of the experiment". Paraphrasing from memory on that quote.

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