252 



BIOLOGICAL PROBLEMS 



the fuse factory by an indirect method. The electric 

 current supplied to each section of the works was 

 registered by a separate watt-meter, and by reading 

 these meters every hour I could determine the exact 

 amount of current consumed. I was able to determine 

 the current required to drive the machinery, apart 



7 



1O 11 12 1 2 

 Time in, Jiours 



Fig. 2. Hourly Output of Fuse Bodies 



from that required for the actual lathe operations, and 

 I found that the excess power-load determinations 

 made in this way gave an output which corresponded 

 well with the direct observations on output which 

 were made by Mr Neilson Jones, who was working in 

 conjunction with me. It will be seen in fig. 2 that 

 the curves of output of women engaged in the opera- 

 tion of turning aluminium fuse bodies agree fairly 

 well except in the last half-hour of the morning spell. 



