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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.