Excerpt from Journal de Mathématiques Pures Et Appliquées, ou Recueil Mensuel de Mémoires sur les Diverses Parties des Mathématiques, Vol. 8: Année 1865Note sur la surface engendrée par la révolution d'une conique autour d'une droite située d'une manière quelconque dans l'espace, par M. De la Gaumerie.Sur la construction des équations du quatrième degré par les géomètres arabes.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.