Skip to contentSkip to Braille Studio

Library / Philosophy / A System of Logic, Ratiocinative and Inductive / Braille

A System of Logic, Ratiocinative and Inductive ⠃⠗⠋ braille edition

Grade 1 — uncontracted, letter-for-letter. Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 2 instead.

Download .brf — Grade 2 Download .brf — Grade 1 Plain-text reader .txt

2,502,551 braille cells · 2,651 embossed pages at 40×25 · 2,416 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.