What are three of the things that came to the town during the summer?

From the text:

A circus came. The boys played circus for three days afterward in tents made of rag carpeting -- admission, three pins for boys, two for girls -- and then circusing was abandoned.

A phrenologist and a mesmerizer came -- and went again and left the village duller and drearier than ever.

There were some boys-and-girls' parties, but they were so few and so delightful that they only made the aching voids between ache the harder.