C. A. Claremont 
197 
this curve the corrective factors for non-census years. This was done on a large 
diagram of which IV is a small reproduction. 
A noteworthy feature of these corrective factor curves is the inflexion which 
occurs between 1861 and 1871. There are two tests of its reality. First the 
diabetes curve confirms the cancer curve and secondly as far as the data permit 
an approximative factor was obtained for the cancer corrective factor curve for 
the census of 1851 ; it is seen to substantiate the general sweep of the corrective 
factor curve and confirms the inflexion between 1861 and 1871. Diagram V 
shows that the inflexion also occurs in the age distribution of the population as 
exhibited in parentage of males under 45. 
In deahng with the years 1875 to 1880, the few deaths separately recorded 
under Melanosis, Fungus Haematodes and Sweep's Cancer — now entitled simply 
cancer — were included under the total deaths from cancer. 
The following table showing the work for the year 1911 indicates the manner 
in which the census year corrective factors were found. The crude deathrates 
per million of the male population in this year were: Diabetes 110-96 and 
Cancer 893-57. 
TABLE I. Corrective Factors for Census Year 1911. 
Age 
Groups 
Cancer 
Deaths 
(Males) 
Dia- 
betes 
Deaths 
(Males) 
Census 
Population 
(Males), 
1911 
Deathrate 
per 
million. 
Cancer =rj 
Death- 
rate per 
miUion, 
Diabetes 
= ^2 
Standard 
Population, 
1901, per 
million A 
Corrected I 
Cancer 
r,A 
106 
)eathrates 
Diabetes 
~10« 
Under 5 
64 
11 
1,936,113 
33- 1 
.5-7 
114,262 
3-78 
-65 
5—10 
51 
22 
1,847,295 
27-6 
11-9 
107,209 
2-96 
1-27 
10—15 
39 
36 
1,747,631 
22-3 
20-6 
102,735 
2-29 
2-12 
15—20 
60 
67 
1,654,895 
,36-3 
40-5 
99,796 
3-62 
4-04 
20—25 
95 
71 
1,502,652 
63-2 
47-3 
95,946 
6-06 
4-54 
25—35 
317 
157 
2,831,655 
111-9 
55-4 
161,580 
18-08 
8-95 
35—45 
978 
183 
2,336,508 
418-6 
78-3 
122,848 
51-42 
9-62 
45—55 
2901 
252 
1,694,333 
1712-2 
148-7 
89,222 
152-77 
13-27 
55—65 
4627 
461 
1,085,156 
4263-9 
424-8 
59,741 
254-73 
25-38 
65—75 
4602 
512 
602,764 
7634-8 
849-4 
33,080 
252-56 
28-10 
75—85 
1687 
155 
18.3,869 
9175-0 
843 0 
12,090 
110-93 
10-19 
85— 
168 
9 
22,737 
7388-8 
395-8 
1,491 
11-02 
■59 
All ages 
15,589 
1936 
17,445,608 
893-57 
110-90 
1,000,000 
870-22 
108-72 
Accordingly for 1911 we have corrective factors for: 
Cancer = .i^^gu = 870-22/893-57 = -97386. 
Diabetes = ^F^^^^ = 108-72/1 10-96 = -97981. 
