CHAPTER I. CONIC SECTION.
It was just after that happy visit of which I told
at the end of “What Katy Did,” that Elsie
and John made their famous excursion to Conic Section;
an excursion ...
Sarah Chauncy Woolsey (pseudonym Susan Coolidge) was the author of many novels and short stories for children, but she is known chiefly for the Katy series of five books, published between 1873 and 18...