Holmes is miffed because Watson has a life outside of detective work, whereas Holmes really doesn't. Also--Watson had to research the symptoms of syphilis? Isn't he a medical doctor??
Holmes reaction was because he doesnt like the fact that Watson has another life ie his practise and wife If Watson is a doctor how did he not know the sypmtoms of syphillis
@curlytoes79 However do you go to a foot doctor to have your brain looked at? there are many aliment in the world and no one man can be expected to know them all off the top of his head let alone all the symptoms causes cures and treatments.