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How to Use the Popular Science Library; History of Science; General Index ⠃⠗⠋ braille edition

Grade 1 — uncontracted, letter-for-letter. Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 2 instead.

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1,228,378 braille cells · 1,293 embossed pages at 40×25 · 3,762 unrepresentable characters omitted

⠃⠑⠉⠁⠍⠑⠀⠺⠕⠗⠇⠙⠤⠋⠁⠍⠕⠥⠎⠲⠀⠠⠇⠊⠎⠞⠑⠗⠂⠀⠊⠝⠎⠞⠑⠁⠙⠀⠕⠋
⠀⠃⠑⠊⠝⠛⠀⠉⠁⠗⠗⠊⠑⠙⠀⠁⠺⠁⠽⠀⠀⠃⠽⠀⠞⠓⠑⠀⠉⠑⠇⠑⠃⠗⠊⠞⠽⠀⠓⠑
⠀⠁⠞⠞⠁⠊⠝⠑⠙⠂⠀⠞⠥⠗⠝⠑⠙⠀⠓⠊⠎⠀⠁⠞⠞⠑⠝⠞⠊⠕⠝⠀⠞⠕⠀⠞⠓⠑⠀
⠎⠉⠊⠑⠝⠞⠊⠋⠊⠉⠀⠀⠙⠑⠧⠑⠇⠕⠏⠍⠑⠝⠞⠀⠕⠋⠀⠓⠊⠎⠀⠊⠍⠏⠕⠗⠞⠁⠝⠞
⠀⠙⠊⠎⠉⠕⠧⠑⠗⠽⠲⠀⠠⠓⠑⠀⠊⠝⠧⠑⠎⠞⠊⠛⠁⠞⠑⠙⠀⠇⠁⠉⠞⠊⠉⠤⠁⠉⠊⠙
⠀⠀⠋⠑⠗⠍⠑⠝⠞⠁⠞⠊⠕⠝⠂⠀⠞⠓⠑⠀⠗⠑⠇⠁⠞⠊⠕⠝⠀⠕⠋⠀⠃⠁⠉⠞⠑⠗⠊⠁
⠀⠞⠕⠀⠋⠇⠑⠎⠓⠀⠊⠝⠋⠇⠁⠍⠍⠁⠞⠊⠕⠝⠎⠀⠁⠝⠙⠀⠞⠕⠀⠀⠞⠓⠑⠀⠃⠑⠎⠞
⠀⠍⠑⠞⠓⠕⠙⠎⠀⠕⠋⠀⠞⠗⠑⠁⠞⠊⠝⠛⠀⠺⠕⠥⠝⠙⠎⠀
⠁⠝⠞⠊⠎⠑⠏⠞⠊⠉⠁⠇⠇⠽⠲⠀⠀⠀⠀⠠⠇⠊⠎⠞⠑⠗⠂⠀⠓⠕⠺⠑⠧⠑⠗⠂⠀⠺⠁⠎
⠀⠝⠕⠞⠀⠞⠓⠑⠀⠋⠊⠗⠎⠞⠀⠞⠕⠀⠑⠍⠏⠇⠕⠽⠀⠁⠝⠞⠊⠎⠑⠏⠞⠊⠉⠎⠀⠊⠝⠀
⠞⠓⠑⠀⠀⠞⠗⠑⠁⠞⠍⠑⠝⠞⠀⠕⠋⠀⠺⠕⠥⠝⠙⠎⠂⠀⠁⠝⠙⠀⠓⠊⠎⠀⠛⠗⠑⠁⠞⠀
⠉⠕⠝⠞⠗⠊⠃⠥⠞⠊⠕⠝⠀⠞⠕⠀⠍⠑⠙⠊⠉⠁⠇⠀⠏⠗⠁⠉⠞⠊⠉⠑⠀⠺⠁⠎⠀⠀
⠙⠥⠑⠀⠞⠕⠀⠞⠓⠑⠀⠎⠽⠎⠞⠑⠍⠁⠞⠊⠉⠀⠍⠁⠝⠝⠑⠗⠀⠊⠝⠀⠺⠓⠊⠉⠓⠀⠓⠑
⠀⠑⠭⠏⠑⠗⠊⠍⠑⠝⠞⠑⠙⠲⠀⠠⠓⠑⠀⠺⠁⠎⠀⠝⠕⠞⠀⠁⠀⠀⠃⠗⠊⠇⠇⠊⠁⠝⠞⠀
⠎⠥⠗⠛⠑⠕⠝⠂⠀⠃⠥⠞⠀⠁⠀⠙⠑⠇⠊⠃⠑⠗⠁⠞⠑⠀⠁⠝⠙⠀⠉⠁⠗⠑⠋⠥⠇⠀
⠕⠝⠑⠀⠺⠓⠕⠎⠑⠀⠉⠓⠊⠑⠋⠀⠙⠑⠎⠊⠗⠑⠀⠀⠺⠁⠎⠀⠞⠕⠀⠓⠁⠧⠑⠀⠞⠓⠑⠀
⠏⠁⠞⠊⠑⠝⠞⠀⠗⠑⠉⠕⠧⠑⠗⠲⠀⠠⠓⠊⠎⠀⠺⠓⠕⠇⠑⠀⠎⠥⠗⠛⠊⠉⠁⠇⠀
⠉⠁⠗⠑⠑⠗⠀⠺⠁⠎⠀⠛⠥⠊⠙⠑⠙⠀⠀⠃⠽⠀⠞⠓⠊⠎⠀⠏⠗⠊⠝⠉⠊⠏⠇⠑⠀
⠺⠓⠊⠉⠓⠀⠏⠗⠕⠧⠑⠙⠀⠎⠕⠀⠎⠥⠉⠉⠑⠎⠎⠋⠥⠇⠀⠞⠓⠁⠞⠀⠃⠑⠋⠕⠗⠑⠀
⠓⠊⠎⠀⠙⠑⠁⠞⠓⠀⠀⠞⠓⠑⠀⠺⠓⠕⠇⠑⠀⠍⠑⠙⠊⠉⠁⠇⠀⠏⠗⠕⠋⠑⠎⠎⠊⠕⠝⠀
⠎⠁⠇⠥⠞⠑⠙⠀⠓⠊⠍⠀⠁⠎⠀⠍⠁⠎⠞⠑⠗⠂⠀⠁⠝⠙⠀⠺⠓⠑⠝⠀⠓⠑⠀⠙⠊⠑⠙⠂
⠀⠀⠗⠑⠚⠕⠊⠉⠑⠙⠀⠞⠓⠁⠞⠀⠓⠊⠎⠀⠗⠑⠍⠁⠊⠝⠎⠀⠺⠑⠗⠑⠀
⠑⠝⠞⠕⠍⠃⠑⠙⠀⠊⠝⠀⠠⠺⠑⠎⠞⠍⠊⠝⠎⠞⠑⠗⠀⠠⠁⠃⠃⠑⠽⠲⠀⠀⠀⠀
⠠⠞⠓⠑⠕⠙⠕⠗⠀⠠⠃⠊⠇⠇⠗⠕⠞⠓⠀⠺⠁⠎⠀⠕⠝⠑⠀⠕⠋⠀⠠⠇⠊⠎⠞⠑⠗⠄⠎⠀
⠛⠗⠑⠁⠞⠑⠎⠞⠀⠙⠊⠎⠉⠊⠏⠇⠑⠎⠲⠀⠠⠓⠑⠀⠊⠝⠞⠗⠕⠙⠥⠉⠑⠙⠀⠀

These are the same pages the .brf download embosses — form-feed breaks and all. BRF opens in braille software (Duxbury, BrailleBlaster), on embossers, and on refreshable displays.