Jupiter in Scorpio

Scorpio is one of the two houses of Mars, which puts the planet Ptolemy calls benefic inside a house of one he calls malefic. In Ashmand's 1822 translation those words sort planets by temperament, with heat and moisture on one side and excess cold or dryness on the other. Sepharial 1920 softens the contrast further and says Jupiter acts as a benefic only through conjunction or good aspect.

Lilly 1659 sets degrees 7 to 14 of Scorpio as the terms of Jupiter. Cold and moist in his table, the sign agrees with Jupiter's moisture and parts company on heat. Ptolemy's weather chapter calls it fiery and thundery as a whole, and the two descriptions of one sign are a reminder that these writers used several systems side by side.

No book here gives a character for this exact pair. Modern popular astrology tends to describe a large appetite for hidden matters and for the deep end of any subject. That is modern language, and the old writers give it no direct support.