This is one of the examples that Alan Leo published in Modern Astrology: pages 326-327 of Volume 2, Number 2, September 1891. Later, Leo would reprise these published horaries as his examples in Horary Astrology.
Horary Question: Boy Missing from Home
The Horary Examples of Ebinezor Sibly (1790, 1817)
Text Copyright 2007 J. Lee Lehman
I have hade several clients who have premised their horaries on similar questions: deciding upon a financial instrument based on either one’s life expectancy, or one’s immediate prospect of getting sick. Notice here with the question of length of life, Sibly proceeded because…
Thanks to multiple reprints, many modern astrologers are acquainted with the works of W.J. Simmonite. However, those reprints of his horary work have been based on the 6th Edition, which was published posthumously in 1896, with commentary (and some changes) by John Story. The text here is quoted from the 1st Edition, pp 55-56.