#as shown later on when mina describes him in near collapse while he logs himsefl much more casually as being weary and disheartened

[twilight-zoned-out]

About Jonathan’s “It is very annoying, for I do not see how I am to shave” response to Dracula throwing his glass out the window:

Jonathan begins the entry stating that he can’t speculate or he’s going to completely spiral.

Let me be prosaic so far as facts can be; it will help me to bear up, and imagination must not run riot with me. If it does I am lost.

Jonathan has no certain way to know what Dracula’s invisibility or response to the glass means, but he does know what losing the glass means physically for himself, so he focuses on that.

Jonathan refuses to write down any speculations. He has them - he airs fears at the beginning of the entry that he’s “the only living soul within the place” - but in this isolated castle filled with shadows, he needs his journal to be an account he can trust, and to do that he can only write what he’s certain of.

He does something similar when mentioning Dracula’s eating habits:

It is strange that as yet I have not seen the Count eat or drink. He must be a very peculiar man! 

Jonathan doesn’t dare speculate further, but he can’t help but note that it is, indeed, strange.