into communication with the apparatus. C. A how- 4. To utilize a larg§ surface for condensation at these low itzer shell containing 700 grammes of chlorate of potash tube. I hope to utilize a similar arrangement in attempting the It is heated with gas. temperatures. 5. To be able to utilize the… … cohesion is not a general law, the gas periment. must pass to the absolute zero and be PICTET'S APPARATXrs FOR THE LiaUEFACTION OF OXYGEN come inert—that is to say, an impal- At 10 o'clock in the evening the manometer, which had risen to 560 at- pable powder. mospheres, sank in q, few minutes to…