APPENDIX. 



23 



line in figure 3. By continuing to form successively larger groups 

 smoother and smoother lines can be obtained, but it is better to 

 make further adjustment in another way, leaving the work just 

 performed with the decision to use groups of three successive classes 

 in plotting the final curve. 



.3/6 310 .320 .322. .Az4 .3zt 

 SPECIFIC HEAT 

 FIG. 3. Frequency curve and its development. 



The essential feature of the preceding method of grouping is the appli- 

 cation of a correction to the number of results in each class according 

 to the number of results in the two adjacent classes. Of course the 

 graphical method of rounding off the results immediately suggests 

 itself, and is used in the distribution curve, figure 4. The ordinates 

 indicate specific heats and the abscissas the number of results. The 

 individual results, arranged in order of their magnitude, are placed 

 at equal distances apart along the horizontal axis; and each is 



