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Library / Chemistry / Invention: The Master-key to Progress / Braille

Invention: The Master-key to Progress ⠃⠗⠋ 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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530,438 braille cells · 557 embossed pages at 40×25 · 606 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.