I am going to write about Homeopathy a little bit, not because of the practice itself, although I will tell you a little of that as an aside, but because I am going to describe a procedure in painting by comparison .
Homeopathy is an alternative medical philosophy invented by Samuel Hahnemann in 1796. Hahnemann was writing in an era when medicine was primitive, ineffectual and often painful and dangerous. He expounded a theory of "similars". That is, he believed that a very small dose of a substance that would give you a symptom, was useful for treating someone who had that same symptom. So if you had a problem with skin rashes he might have given you something that would cause skin rashes, like Poison Ivy. Because the remedies often contained noxious. or poisonous ingredients Hahnemann diluted them. In fact he believed that the more diluted they were, they more efficacious they would be. He would put a sprinkling of an ingredient, like salt or arsenic into a beaker of water. Then he would take a tiny eyedropper from that and dilute it with another entire beaker of water. From that beaker he would take another eyedropperful and add it to third beaker, and so on. Often the mixtures made contained no molecules of the original active ingredient actually present in the final remedy.
Homeopathy is discredited today although there are homeopathic remedies on the market. ZiCam for colds is a well known one, and there are people who compound and sell homeopathic remedies. Many of the products available today that say they are homeopathic, are not actually created by this dilution system. They just use the word to mean all natural, and harmless, selling their products to people who are unfamiliar with the actual definition of what a homeopathic remedy is.
The reason I brought all of this up is to talk about mixing paint on the palette though. My long suffering pink camera seems to have died, so I shot the following pictures with my cell phone. They aren't very good, but you should be able to see what I am up to.
I sometimes paint passages in extremely high values, notes that are very close to white but carry a smidgen of a color.This is useful in skies or the sides of boats in sunlight etc. I can mix up a pile of color to paint these passages this way, like a homeopath. I make a very high key (light) note using a lot of white and a pigment. In the picture below I used cadmium yellow.
Then I take a smidgen (like an eyedropperful) of that mixture and throw it into a new pile of white. That is shown below.
Often I will do this to three or so different pigments, with white, creating three piles that are very close to white but contain a little red or blue or yellow. With those three piles I can work in an extremely high value in broken color. I can use each of those different tints to express the turning of a form in bright sunlight.
Snowcamp I is full. I have a few spaces left in Snowcamp II if you want one now would probably be the time to sign up. If there is sufficient interest I may be able to add a third session I am not sure. The link is over there on the right in my sidebar.