While the history of the humanities can be studied as a field on its own, it is not isolated from the history of science. There have been interactions between the humanities and the sciences at any time and place, even after the infamous divide between the two areas in the early 20th century. We have just received a generous NWO grant to investigate the long-term history of the humanities and sciences, which will contain several research positions. You will hear more about it soon.
Here is a short abstract of the project:
"Academic disciplines are often seen in isolation from each other, a perception that is historically unjust: cross-pollination of ideas takes place constantly. In fact, more often than not, this is what leads to breakthroughs. In order to break down stereotypical distinctions between disciplines, historians should formulate an all-encompassing, post-disciplinary history of knowledge."
For more info, click here. (Note that the Dutch often mistranslate 'wetenschap' into 'science', which has also happened in the linked article. 'Wetenschap' should actually be translated into the compound 'humanities and science')