Sentence:  There was some little undefinable coolness between old General Chattesworth and Devereux. He admired the young fellow, and he liked good <WSD>blood</WSD> in his corps, but somehow he was glad when he thought he was likely to go. When old Bligh, of the Magazine, commended the handsome young dog's good looks, the general would grow grave all at once ... 
Meaning of the word marked with <WSD> tags:  Temper of mind; disposition; state of the passions.