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EPISODE · Jan 22, 2026 · 33 MIN

Textbook Sleep #17: Man's Conquest of Substances

from Textbook Sleep · host Jim Nolan

Hello and welcome to another episode of Textbook Sleep, the non-prescription yet habit-forming Maximum-Strength Sleep Aid. Time-released every Wednesday night at 8:30 Eastern Time. Tonight we continue to read from General Science by Bertha M. Clark, Ph.D. Dr. Clark was the Head of the Science Department at the William Penn High School for Girls in Philadelphia. The school opened in 1909, went co-ed in 1974, and closed in 2010. General Science was published in 1912. Its only downside, for our purposes, is that it often veers into interesting territory. But I will try to read it in velvety, sleep-inducing tones. You will not be conscious long once you start hearing about acids, bases, and here’s the kicker… washing powders. If I can hold my own head up—and that’s a big if—we may even get to nitrogen and its relation to plants. There will be no quiz on this material.Are you still awake? Let us commence. This podcast will end quietly. Get full access to Pieces of Jim at jimnolan1.substack.com/subscribe

Episode metadata supplied by the publisher feed · Published Jan 22, 2026

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Textbook Sleep #17: Man's Conquest of Substances

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