754 



Prof. F. Horton and Miss A. 0. Davies 



on 



1 cm. below K and parallel to it. M is another platinum 

 gauze which completely covers the entrance to the main 



To carbon purifying 

 tube and pumps. 



o c 



tube. The short glass tube (5 mm. long) connecting the 

 main and the side tubes, is approximately circular in cross 



