""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 the different types of cones and their properties, including their intersections with other cones and their relationship to other geometric shapes. He also discusses the equations that describe these cones and their solutions.In the second part of the book, Chasles focuses on spherical conics. He examines the properties of these curves on a sphere and their relationship to other geometric shapes. He also discusses the equations that describe spherical conics and their solutions.Throughout the book, Chasles provides detailed mathematical proofs and illustrations to support his arguments. The book is aimed at mathematicians and students of mathematics who are interested in the properties of cones and conics. It is considered a classic work in the field of geometry and is still widely studied and referenced today.And An Appendix On The Application Of Analysis To Spherical Geometry.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.