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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 · 7,688 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.