Propolis with control of "Candida albicans" and immunomodulatory effects. Propolis is used by some string instrument makers (violin, viola, cello and bass) as a varnish ingredient. Some workers use it to seal the surface of newly made bridges. Propolis was purportedly used by Antonio Stradivari in the varnish of his instruments. Propolis is used by some chewing gum manufacturers to make propolis gum. Propolis is used to bring about a chemical reaction to convert fats and oils into automobile wax during application. Propolis Propolis or bee glue is a resinous mixture that honey bees produce by mixing saliva and beeswax with
Mental substance Mental substance Mental substance is the idea held by dualists and idealists, that minds are made-up of non-physical substance. This substance is often referred to as consciousness. This is opposed to the materialists, who hold that what we normally think of as mental substance is ultimately physical matter (i.e., brains). Descartes, who was most famous for the assertion "I think therefore I am", has had a lot of influence on the mind–body problem. He describes his theory of mental substance (which he calls res cogitans distinguishing it from the "res extensa") in the "Second Meditation" (II.8) and in "Principia Philosophiae"