270 



Grwhiation and AiHilysis of a Siclniess Table 



affect the niain part of the table to a small exteiit and iis the death ciirve was 

 only required t'or coinparison I considcrcd it perfcctly safe to use them. 



The ciirve has been plotted side by side with the sickness curve in figure 3 

 and the fnUowing points niay be noticcd : — 



(1) The skewness of the sickness curve is '2 aud of the duatli curve 1. 



(2) The mode and mean of the sickness curve are nearer cid age than the 

 mode and mean of the doath curve. 



(3) The sickness curve starts 18 ycars and cuds 4 years before the death 

 curve. 



An e.xaniination of the two curves shews the connection between sickness, 

 mortalit)' and age and is perhaps the simplest way of doing so. 



Tliis conchides my werk on Sutton's Table but the analysis of sickness will be 

 very incomplete tili other tables have been studied and infantile sickness has 

 reeeived a thorough examination. 



TABLE I. {/or use with Type III. curves). 



* This column is iieRiitive throimhout aiul as it will have to bc multiplied it will be foiind more 

 convenieut to dcal with the logarithiiis in this form than iu the usual one giviiig a positive inantissa and 

 negative cbaractcristic. 



