Is There an Essence in Water?

The argument here is that we are actually good at noticing that there are essences in things, even when we don't know what they are. So this gets us back to crypke for instance. If you think of tigers, some one asks me to give a necessary and sufficient conditions of being a tiger, and i would say, well, i can't really do that. I'm talking about these realEssences. And i have to act as if they are real. They become the subjects of scien investigation, right? In water, long before i know there's h two o, i say, yes, there's an essence to this. It may take hundreds of years