7 AUGUST 1869, Page 23

The Phenomena and Laws of Heat. By Achille Cazin. Translated

by Elilhu Rich. (Sampson Low.)—When everything, it may be said, is reduced to some phenomenon of heat, or heat enters into every kind of action, an exhauitive book on this subject is impossible ; but we have, considering the limits allowed, a very good and full one. It is written with the lucidity and liveliness characteristic of French science, and, if we were disposed to be hypercritical, we might say, with a little digres- siveness. A section, on the " Fireworshippers " can hardly be said to' be absolutely irrelevant, but an English writer would scarcely have put it in. M. Cazin is indebted to Professor Tyndall, to whom indeed England owes much of what it has of European scientific reputation, for- much of his matter ; but not, it must be acknowledged, the obligation, am obligation, it may be said, impossible to avoid. The book is amply illustrated.