Thank you Mark and Paul for taking the time to answer. As I remember from a previous post where I brought this question up, I'm having great trouble making myself clear. I'm sure this must mainly be the way I'm setting it out, but I do also think there is a real blind spot in astrology about this issue.
First, I don't consider myself to be a siderealist. I did only really get interested in astrology when I discovered Indian sidereal 15 years ago, and I then read a lot about it and took classes. I'd previously had a couple of general character etc readings from semi-professional tropical astrologers, and years ago an Astroflash reading, and although I have a very accurate birthtime (birth cert 13:35, military hospital, plus off her head my mother said, "about 2pm") they really didn't seem to be describing me at all. So I lost interest ? but a reading with Indian techniques from a French astrologer who didn't know me at all really made sense.
Second, I don't accept that Aries is the first sign of the sidereal zodiac, or that there needs to be a "first" sign. In Indian literature, there are definite records of the Pleiades having been considered the first lunar mansion, only later did the "first" one move through the Aries area to Ashwini, the current and apparently definitive "first" (the moving along hasn't been continued). The fact that Aries is indeed now considered "first", as per the (not so very old) classical texts and in practice, I think is probably another indication that much was borrowed from the Greeks, when the VP was already in early Aries, and/or the Greek zodiac had already been "corrected" to make it tropical.
The only place Aries being generally considered "first" sidereally makes a practical difference is in the calculation of divisional charts (harmonics), because of the way our computer programs are designed. I agree with John Addey that the most effective starting-point for harmonics, even sidereally, is the VP, or some other intersection of a great circle with the ecliptic (e.g. the intersections of galactic equator/ecliptic). Fagan calculated sidereal harmonics from 0? Taurus, but I don't find this any more convincing than Aries, sidereally.
Despite this interest in sidereal astrology, the elegance of the classical tropical approach, the emphasis on the annual cycle of light, and perhas the greater cultural resonance attracted me to look again at tropical. I noticed that in mundane work, comparing related charts straddling long periods of time, significant and appropriate "coincidences" just didn't show up in sidereal, because of precession not being taken into account.
For example (sorry, Mark, about the multiwheels), if you look at the 9/11 attack, the 1993 WTC bombing, Pearl Harbour and the Sibly chart (to a lesser extent, any chart for 4th July 1776) together, you get a couple of striking line-ups (particularly on the 4th July Saturn). You get alignments tropically which you don't get sidereally, and which are even more focused when you also look at the 9th harmonic chart (a hangover from Indian, to look at the H9 as a sort of second base chart). Ditto for the charts for the recent Paris attacks + preceding (September) LE + SE + foundation of the 1st Republic (widely used, not just by me and Wolfgang, as the founding chart for France post the Revolution, though others are also used, as Mark has pointed out). (9th harmonics don't add so much, in this French series.) I've also found that even over a person's lifetime, the moments of birth and death can show striking correspondences that get weakened sidereally by the 1?+ of precession.
I may of course be reading too much into these observations, but it's been enough to get me more interested in tropical. But having noticed (it seemed to me) that other people I know don't seem to be very well described by their tropical rulerships either, I wasn't happy about using them until I'd got things a bit clearer. (I'm not very interested in descriptions-by-sign, maybe because Indian uses rulers much more than signs, as I notice Morin does too ? I find it more interesting to see a configuration as dominated by say a negative, introverted Mars than to see "a typical Scorpio", to see someone as broadly "solar" rather than "a typical Leo".)
So I hesitate to spend a lot of time on tropical astrology if something might be amiss with the rulership scheme it's based on, or if it might be based on false premises. The classical rulership scheme has an elegant coherence and an obvious symmettry. So does the solar year, with its four quarters marked off by the four cardinal points (i.e. the antiscia / contra-antiscia axes). I've suggested this before?: try explaining the rulership arrangement to any non-astrology-savvy person (without mentioning sign names, as they'll have heard of those)?; then separately explain the equinoxes and solstices?; then ask them where they would put the latter in the rulership pattern?? It won't be be between Pisces and Aries, I'll bet, more likely between Aries and Taurus.
So why are they wrong, that's what I'm asking?? Why do astrologers know better?? Is it just because Ptolemy said "the sign which begins with the vernal equinox, that of Aries, is the starting-point of them all, making the excessive moisture of the spring the first part of the zodiac as though it were a living creature"?? But surely this is probably just because that's where the VP was (sidereally), or nearly, when Ptolemy was writing. When I first asked this question, I really thought someone would answer "Oh yes, X has clarified all that, it would be more logical to put it between Aries and Taurus (or even Libra and Scorpio), but that's wrong because...". But no, Cyril Fagan seems to be the only one to have ever even asked this question (in Astrological Origins).
As Mark quotes, Ptolemy goes on to say that Aries "is the starting-point of them all, making the excessive moisture of the spring the first part of the zodiac [?] The second age, up to the prime of life, exceeds in heat, like summer; the third [...] has an excess of dryness, like autumn", yet these are deemed to be ruled by Mars, Moon and Venus respectively. And this assertion that Aries is the starting point has subsequently been taken as true for all time, not just for Ptolemy's time when the VP was near 0? sidereal Aries.
As Deborah Houlding has written somewhere on Skyscript (I can't find it now), "the error" (i.e. of putting the VP at 8? or 5? Aries like Valens) was "corrected", and tropical astrology was then able to develop more coherently. But surely the "error" could have been corrected back to 0? Taurus, since the VP, disconnected from the constellations, no longer had to be anywhere near the constellation of Aries.
(Incidentally, I'm not questioning that "Aries" can be considered cardinal, even it was taken to be the sign
preceding the VP: cardinal means "pertaining to a hinge", and surely the division leading up to a hinge is just as pivotal as the one falling away from it. In the diurnal chart, the strong angular houses are the ones leading up to the angles, not the ones falling away from them.)
I am not saying I'm right, or that Fagan is right, to think that lining up the symmettry of the rulership scheme with that of the antiscia/contra-antiscia is the obvious thing to do, but surely I'm not the only one to see the logic in the idea, and to wonder why it's never been considered, and whiy it should be otherwise. On the surface, it looks to me as though the rulerships scheme could be much older than the "VP early or 0? Aries" era, designed for an earlier epoch, and that the latter could have been superimposed on the former.
I have tried to persuade myself to drop all this, maybe try and study tropical without the rulerships or something. But then I keep reading things which reawaken my interest. For example, a while back (when he died) I read David Roell's Skeet Shooting for Astrologers. Roell doesn't question Aries as 1st sign-starting-at-VP, but he points up lots of things that suggest there's a problem.
He asserts, for example, that if you want to give a snap reading of a chart to impress someone, just describe to them the qualities associated with the sign in their 2nd house, it's ruler, the placing of that ruler and the aspects it receives. Or Charles Carter's refusal to believe that Hitler could have been a Libra, and must have been a Scorpio, that his chart makes much more sense that way (I know that the "minor" dignities come to the rescue here, for traditional astrologers).
Roell must surely also be right that we need to look beyond textual evidence for the origins of the zodiac?: there must have been an oral tradition long before things got written down, and ancient peoples have left us other clues, in iconography (and images of the four fixed signs as cornerstones of the zodiac recur well into the Christian era), in ancient monuments and in the landscape. His "theory of the Earth's primary zodiac", while still very sketchy and not drawing out its own full implications, ties in nicely with the line of thinking of Robin Heath in "The astronomy and astrology of the solar hero myth" here on Skyscript?:
http://www.skyscript.co.uk/sunheath.html
Viewed from where I live in Lyon in France, at the equinoxes (both of them...), the sun rises behind Mont Blanc. It's very striking and beautiful. The pre-Roman peoples settled here must surely have noticed this, and they may also have associated Mont Blanc, and other landmarks on the horizon, with particular gods, spirits or principles, as we know ancient peoples did. Stone structures like Stonehenge, or Carnac in Britanny, are now generally accepted as being arranged to pinpoint alignments at the equinoxes and solstices (perhaps for other purposes too). A particular area of the horizon could have become associated with both a certain spirit or god (later, a saint, as in the various St Michael's Mounts, etc), and with a certain time of the year when the Sun rose in that area, and subsequently with the part of sky seen to be rising over that area in the evening, probably initially at the full moon.
If they divided the horizon into six bands and associated each sixth with a god, which later became a planetary god, it's probable they would have used the same associations for the same area when the sun was heading up to the summer solstice and down to the winter solstice ? and when they projected these "rulerships" onto the sky, and more precisely the ecliptic band of sky, they would have got a zodiac, something like an "Earth's primary zodiac".
It would have been a symmetrical zodiac, the same segment of horizon (and hence of ecliptic rising over it) getting the same "ruler" on the way up as on the way down, as it would be if we placed the VP at 30? Aries/0? "Taurus" (or 30? Libra/0? Scorpio) in the rulership scheme, and not one step out of phase, as the Aries-based zodiac requires.
Well, that's much more than I'd planned to write, and this is going way beyond the title of the thread, but I hope you now see what's niggling me, and what I'm asking, and why I have a problem with 0? Aries =VP= start of the "1/6th Mars section" on the way up the horizon from Mont Blanc, opposite a "1/6th Mercury section" ("Virgo") for the same bit of horizon as the Sun approaches the autumn equinox on the way down. Mont Blanc looks just as beautiful whichever direction the Sun's heading.
Graham