A NEW CITRltKNT U Kit ;ll H;. ETC. 



485 



TABLK II. Observations for Axial Length of Coils. Temj)erature 15 C> 50. 



* These values were determined by measuring the complete axial length of the upper and lower coils 

 plus the central gap. 



Observations on 1G3, 149 and 135 strands indicate practical equality of the axial lengths of the upper 

 and lower helices and also enable the length of the central gap to be calculated. This latter length was 

 subtracted from the total and the result divided by two. In taking a mean of the values given in 

 Column 6, only half the weight has been attached to the " * " observations. 



