Several of these have already been given. A few more will suffice to settle the principle.
- Dandelion (Taraxacum)
“It has a golden yellow flower. The fresh, full-grown root is of a light brown color externally, whitish within, having a yellowish ligneous cord running through its center. Taraxacum is slightly tonic, diuretic, and aperient; and it is thought to have a specific action upon the liver.”
- Pure Carbonate of Potassium (CO3K2. 2xH2O)
Red and yellow principle modified by the blue in the spectrum.
“Antacid, alkaline, and diuretic.”
- Potassium Nitrate (Salt Petre, NO3K or NO2 (OK)
The red, yellow, and blue principles all strong in the spectrum.
“Refrigerant diaphoretic.”
- Sassafras Oil (Oleum Sassafras)
“Yellowish, becoming reddish by age.”
“A mild diaphoretic.”
- Seneka (Senega)
“Externally brownish, internally yellowish.”
“An active, stimulating expectorant, acting in overdoses like squill, as a harsh emetic, and also having some tendency towards the kidneys.”
- Buchu (Leaves of Barosma)
“Brownish yellow,” etc.
“Gently stimulant, with a particular tendency to the urinary organs, producing diuresis, and like all similar medicines, exciting diaphoresis when circumstances favor this mode of action.”
- Oil of Savine (Oleum Sabinæ C10H8)
“Colorless or yellow,” has also the red principle of hydrogen,
“Is stimulant, emmenagogue, and actively rubefacient.”
- Mustard (Sinapis)
“Black mustard seeds are of a deep brown color, slightly rugose on the surface, and internally yellow. White mustard seeds are of a yellowish color and less pungent taste.”
“Mustard seeds act as a gentle laxative.” Its powder made into a poultice, or sinapism, “is an excellent rubefacient.”