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Practical Talks by an Astronomer ⠃⠗⠋ 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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222,865 braille cells · 233 embossed pages at 40×25 · 728 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.