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The filtration of public water-supplies ⠃⠗⠋ braille edition

Grade 2 — contracted English braille (EBAE-compatible subset). Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 1 instead.

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

662,978 braille cells · 673 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.