introduction to chemistry, as it was originally intended. This branch of science is become so very interesting, and the study of it'so general, that it would have been unpardonable to have devoted only a part of a volume to the discussion of it: the Author has, therefore, at the suggestion and desire of many friends, who have given their approbation to the Scientific Dialogues, undertaken to furnish a separate work on this subject, in two volumes, similar in size to this. May 1, 1805. CONTENTS VOL. V. OPTICS. 1. Light: the Smallness and Velocity of its Par- II. Rays of Light :-Reflection and Refraction IV. Refraction and Reflection of Light VI. Parallel, diverging, and converging Rays VII. Images of Objects Scioptric Ball, &c. VIII. Nature and Advantages of Light X. Reflected Light and Plain Mirrors XII. Concave Mirrors--Experiments XIII. Concave and Convex Mirrors XIV. Optical Deceptions, Anamorphoses, &c. |