944 Dr. J. S. G. Thomas on Mutual Action of Convection 



Results and Discussion. 

 Diameter of chamber containing the wires 4*0 inches 



Breadth of chamber contain^ the wires 



3i inches. 



Length of central wire (A) 6*402 cm. 



Length of movable wire (B) 6*378 cm. 



Diameter of wires (A and B) 0* 101 mm. 



E of central wire (A) 0'7288 ohm. 



E of movable wire (B) 0*7377 ohm. 



Temperature coefficient of central wire (A) 0*003748 



Temperature coefficient of movable wire (B) 0*003753 



Heating current employed in the bridge 1*000 amp. 



Tiie first part of the investigation was directed towards 

 determining the manner in which the sensitivity of an 



inclinometer device constituted of the two wires depended 

 upon the distance apart of the two wires*. In fig. 2 the 



* See Proc. Pliys. Soc. vol. xxxii. Part v. p. 310 (1920). 



