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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.