From the May 18, 1935, issue

NEW METHODS FOR MAKING HEAVY WATER ARE PERFECTED

New and low-cost methods of manufacturing heavy water have been perfected at Pennsylvania State College.

In the illustration on the front cover of this week’s Science News Letter, Prof. Harold C. Urey, Columbia University chemist, who received the Nobel Prize for discovering deuterium, or double-weight hydrogen, is shown inspecting the new apparatus.