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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.