Sachiko-san (if I may),

Thank you for your first chapter and the abstract, and now an additional chapter of your dissertation. 

The purpose of this note is to let you know that you can contact me with any questions as I am certainly not an expert in your field. I do read your text carefully and try to ask reasonable questions (for example, the 109/1,069 numbering, which is only one digit either way). 

So please feel comfortable asking any questions and providing any guidance as I'll be reviewing your most recent chapter tomorrow. 

Jackson