Current of Air flowing past heated Platinum Wires. 245 



representing the behaviour o£ wires Nos. 6 and 8. The 

 initial portion of the curve for No. 9 wire is omitted from 



i E a 4 



VELOCITY(CMS PER SEC, VOLUMES REDUCED TO 0°C AND760M.M) 



fig. 2 for the same reason. Fig. 3 shows on an enlarged 

 scale the form of the various curves contained in fig. 2 tor 

 values of the average impressed velocity of the air stream 



