Question this lighthouse-keeper, but to notions vague, distant, and vast, which we vaguely call a brandebourg. [Illustration] II. A CLUSTER OF DAISIES. [Illustration] [Illustration] CONTENTS. PAGE I. THE CONSTITUTION OF BODIES. IV. NEW CHEMICAL REACTIONS PRODUCED BY LIGHT. 1. DECOMPOSITION BY LIGHT. 1868-69. 1 DECOMPOSITION BY LIGHT. 1. DECOMPOSITION.