""Two Geometrical Memoirs On The General Properties Of Cones Of The Second Degree And Of The Spherical Conics"" is a book written by Michel Chasles and published in 1841. The book is a detailed exploration of the properties of cones of the second degree and spherical conics. It is divided into two parts, each of which focuses on one of these topics.In the first part, Chasles discusses the general properties of cones of the second degree. He explores...