What's the term I'm looking for So Aurelia's father (Charles) wasn't married to a woman and she had a child (Catalina).
Later on, Charles had a child with another woman who he was not married to, and she had Louis. Would Louis be considered Cat's step-brother? If not, what's the correct term?

the maximum speed limit is 55 mph on a two-lane undivided highway and for vehicles towing trailers.

the group received an extra pound of butter for christmas.

the annex was delighted to hear that we'll all be receiving an extra quarter pound of butter for christmas.

21 balloons is the story of professor william sherman's travels.

in 1883, he set off from san francisco for a balloon ride over the pacific and was found a month later floating with 21 balloons in the atlantic ocean. this seemed an astounding feat and everyone wanted to know what had happened.    

professor sherman was loyal, however, and said he would tell his tale first to the western american explorers club in san francisco, of which he was a member. this built up suspense for several chapters before he began to tell of the wonders of his adventures and the amazing island of krakatoa, an island which had just been blown up by a volcano.  

the residents of krakatoa are all millionaires who live under a "gourmet government" of their own devising. we get to see all the incredible adventures that creative people with unlimited resources would create according to the author.