Sentence:  I do not judge hastily, Alec, for I have read a dozen, at least, of these stories, and, with much that is attractive to boys, I find a great deal to condemn in them, and other parents say the same when I ask them." / "Now, Mum, that's too bad! I like 'em tip-top. This one is a regular <WSD>screamer</WSD>," cried Will. 
Meaning of the word marked with <WSD> tags:  Something exceptionally good.