McWhirter Theory on Business Cycle

Louise McWhirter presented her theory in 1938 in "Astrology and Stock Market Forecasting" ,  quick excerpt from the Chapter 1 "Theory and Application of Forecasting Stock Market Trends."  as follows:

• .... North Node passes through Scorpio and Libra (backward through the Zodiac), .. transition period ... going from normal to ABOVE normal
• Whenever the North Node reaches the sign of Leo, ... is normally at a high point.
• ... passes through Cancer and Gemini, .. trend is slowly toward normal.
• moves into Taurus (1929), ..lasts through the sing of Aries ..from normal to UNDER normal
• ...move out of Aquarius, ...the sign of low point of business cycle chart

She also mention about 2nd factors to shift the Cycle.

+ve

1. Jupiter conjunction the North Node. 
2. Saturn trine, sextile, or semi-sextile Uranus. 
3. Jupiter in Gemini or Cancer.
4. Jupiter conjunction, sextile or trine Saturn and Uranus
5. The North Node in Gemini.
6. Favorable aspects to Pluto.

-ve

1. Saturn conjunction, square or opposition the North Node. 
2. Saturn conjunction, square, opposition, or semi-square Uranus. 
3. Saturn in Gemini. 
4. Uranus in Gemini.
5. Uranus square, conjunction, or opposition the North Node.
6. Unfavorable aspects to Pluto.” 

implying

1. Jupiter +ve characteristic and Saturn -ve characteristic
2. Saturn v.s. Uranus: +ve for soft aspects, -ve for strong aspects
3. Gemini: +ve when Jupiter and North Node;  and -ve when Saturn and Uranus
4. Jupiter v.s. Saturn, Uranus: +ve for weak weak aspects
5. North Node aspects with Jupiter, Saturn, Uranus: -ve when with strong apsects with Uranus, Saturn; +ve when strong aspects with Jupiter
6. Pluto: +ve to have weak aspects with whatsoever and -ve to have strong aspects whatsoever.

Here's 100 years North Node backward chart excerpt from ZET astrology software.