1838.] 



Table of Mortality. 



823 



none being brought on from the preceding year ; each may be. assumed 

 therefore, on the average, to have given half a year's risk of life, when he 

 lived to the end of the year, and half that period, or a quarter of a year, 

 when he died before the 3 1st December. This assumption for the pro- 

 portion is borne out and confirmed by the general number of admissions 

 reduced to years, which, as above observed, is somewhat less than half 

 the total of boys and girls. Strictly perhaps, instead of half, the frac- 

 tion \%\% , ought to be the ratio of reduction applied to the lives, or the 

 reverse fraction -|||f to the casualties by death, to bring the calculation 

 to the results of a complete year ; but for our present purpose it is 

 quite unnecessary to be so minutely accurate. It will be convenient 

 therefore to adhere to the broad and simple ratio of the half and 

 quarter. The percentage ratio per annum of the boys who were admit- 

 ted at an age less than one, will then be obtained thus : 



Year's risks. Half year Deaths 



deaths, per annum. 



2834 (2713 -f- 2 | 3 ) : (243 * 2) 486 : : 100 : 17,148 

 In the following years the risks being mostly of the entire year the 

 calculation is more simple. 



2430 + 4|» — 2679 : 498 : : 100 : 18,589. 

 The above explanation will make the following table quite intelli- 

 gible. 



Ratio of mortality deduced from the Registers of the Lower Orphan 

 School of Calcutta. 











o g 



V) 



1 



c • 



(O 







rt 







X> 



>> 



. 



x> 







Age. 



ives at risk 

 duced to 

 complete ye 



a 

 u 



CO 



o 



60 



% 



o 



s* 



4> 





o 



,Q 

 O 



V) 



& 



a 

 <o 



Q 



S 



p 



s 



!?! . 



.3 « 



ED « 



Is w 



3 



o 

 Is 



a 

 u 





M 



H 



a. 



ra 





O 



Q 



a. ' 







2 646 



451 



17.044 



2.713 



243 



17.148 



2.766 



208 



14.498 



l 



5.206 



994 



19.093 



2.430 



498 



18.589 



2.436 



496 



18.483 



2 



4.466 



356 



7.970 



2.169 



186 



8.222 



2.203 



170 



7.430 



3 



4.023 



193 



4.794 



1.968 



113 



5.583 



2-030 



80 



3.864 



4 



3.678 



142 



3.860 



1.845 



65 



3.523 



1.790 



77 



4.212 



5 



3.458 



108 



3.123 



1.725 



56 



3.194 



1.788 



52 



2.869 



6 



3.235 



91 



2.813 



1.587 



42 



2.61! 



1.677 



49 



2.880 



7 



2.992 



7) 



2.373 



1.451 



41 



2.787 



1.572 



30 



1.890 



8 



2.718 



72 



2.649 



1.314 



36 



2.727 



J.431 



36 



2.491 



9 



2.470 



29 



1.174 



1.186 



15 



1.257 



1.322 



14 



1.053 



10 



2.159 



50 



2.311 



956 



33 



3.396 



1.210 



17 



1.395 



11 



1.863 



38 



2.039 



750 



20 



2.630 



1.140 



18 



1.566 



12 



1.588 



20 



1.259 



528 



8 



1.504 



1.071 



12 



1.113 



13 



1.230 



18 



1.463 



287 



3 



1.045 



951 



15 



1.565 



14 



930 



6 



0.645 



138 



1 



0.724 



799 



5 



0.624 



15 



696 



10 



1.451 



70 



6 



8.219 



626 



4 



0.636 



16 



484 



9 



1.859 



3S 



3 



7.692 



449 



6 



1.327 



17 



315 



7 



2.222 



19 



. , 



. . 



295 



7 



2.349 



18 



209 



5 



2.392 



14 



1 



. , 



194 



4 



2.040 



19 



142 



1 



0.704 



11 





, , 



131 



1 



0.763 



20 



97 



5 



2 

 L 



2.061 



8 



1 



• • 



89 



1 



1.123 



