Excerpt from An Experimental Inquiry Into the Cause of the Changes of Colours in Opake and Coloured Bodies, With an Historical Preface: Relative to the Parts of Philosophy Therein Examined, and to the Several Arts and Manufactures Dependent on Them T appears to be extremely worth the Time and Pains of philofophers to inquire into the Orders of the Colours of natural Bodies, in the Manner prepofed and begun by Sir Ifaac Newton; and par ticulary to compare the Changes of Colour, which turn up in chemical Operations, with the other Changes, which happen to the Subjeets of the Ope rations, at the fame time. Nothing feems more likely than this to be a Key to the Philofophy of the fmall Parts of natural Bodies, and of their mu tual Influences. Hartley's Obferva. C. 2. Se&, 4. Prop. 60. 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.