Boyd's Syllabic Shorthand is a system of shorthand invented by Robert Boyd, published originally in 1903, and updated in 1912. In this system, symbols are distinguished both by orientation and shape, with the shape representing the vowel and the orientation the consonant. Thus, "ab" and "am" would be represented by the same shape of mark (in this case an L-shape), oriented differently; and "ab" and "eb" would be represented by differently shaped marks, oriented the same way. Shorthand is a general term referring to any abbreviated or symbolic writing method that improves speed of writing or brevity as compared to a standard method of writing the language. ... Robert Boyd was the inventor of a system of shorthand, Boyds Syllabic Shorthand. ... 1903 has the latest occurring solstices and equinoxes for 400 years, because the Gregorian calendar hasnt had a leap year for seven years or a century leap year since 1600. ... 1912 is a leap year starting on Monday. ...

Syllables with the vowel "a" are represented by L shapes. Those with the vowel "e" are hook-ended, approximately shaped like a "J." (However, a smaller version of the same shape represents an extra consonant without a vowel.) Most of the syllables with the vowel "i" have a shape like the "a" series, except that the angle between the short tick and the long line is approximately 45° rather than 90°; there are a few "i" forms that do not fit the pattern (such as "is" and "it") because they are especially common, and some of the forms that might be expected to represent "i" plus a consonant have been turned to other purposes, such as the prefix "circum-." The syllables with the vowel "o" have circular ends, and those with "u" have hooks like those of the "e" series, but the main, longer part of the mark is curved, rather than straight.

References

Robert Boyd. (1903) Boyd's Syllabic Shorthand. Chicago Correspondence Schools.

Robert Boyd. (1912) Boyd Shorthand Instructor. Boyd Press.