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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.