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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.