Two things that don't usually go together.
From the Preface:
The necessity for saying something by way of Preface for the Twenty-Third time renders the formality increasingly difficult with every added year....Twenty-three years is a fair period in which to test the right of such a magazine as SCIENCE-GOSSIP to a literary existence. A good many able competitors and co-adjutors have come and gone; others are still coming and going. There is ample room and verge enough, for a "Struggle for Existence," and a "Survival of the Fittest" among popular scientific journals as well as among other lower organisms.