PICTET, Étude critique du matérialisme et du spiritualisme, 1896

First edition.

Raoul Pictet (1846-1929) Swiss physicist is the first to have successfully liquefied nitrogen and oxygen. He devoted part of his career to refrigeration systems.
In this book he offers a state of the art of Science and natural laws demonstrated by experimentation. Due to his career large place is given to a thermodynamic approach.

Friendly sending from the author to Mr. Marignac on the half-title page.