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The principles of science ⠃⠗⠋ 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.

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1,565,188 braille cells · 1,641 embossed pages at 40×25 · 7,065 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.