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The filtration of public water-supplies ⠃⠗⠋ 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.

Download .brf — Grade 2 Download .brf — Grade 1 Plain-text reader .txt

764,321 braille cells · 785 embossed pages at 40×25 · 7,914 unrepresentable characters omitted

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

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.