Page 1 Page 2 Page 3 Page 4 Page 5 Here are books with unique and original observations, as well as experimental points of view. For more of the same, see the Astrological Essays pages. Their Hidden Meaning, The Technique of Rectification. 174 pages, a pretty dense book, all in all.
Declination is what's on either side of that path, eg, north or south, or right or left.
On page 11, the author neatly summarizes all we thought we knew about declinations. The other 110 pages are an eye-opening treatise showing the richness of the subject. Fortuna Press, spiral. See also the two books immediately below for more on Zain's invention. Church of Light, newly reset, oversize paper.