Publisher's Synopsis
Excerpt from Observations sur la Physique, sur l'Histoire Naturelle Et sur les Arts, Vol. 8: Avec des Planches en Taille-Douce, D�di�es � Mgr. Le Comte d'Artois; Juillet 1776
Au contraire fi on regarde long - temps une tache blanche fur un fond noir, on voit la tache blanche fe d�colorer, en portant l'oeil fur un autre endroit du fond noir, on y voit une tache d'un noir plus vif que celui du fond. M�moires de l'acad�mie des fciences 1743. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.
