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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.