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Natural Philosophy ⠃⠗⠋ 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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257,172 braille cells · 270 embossed pages at 40×25 · 642 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.