Age of Parents and Vitality. 







g f '1 Si 1 II 1 





£ 



0\ 00 Tt" 1> O O t^H O 



« 2" 2 2 4 " ** ^ n 





S 







S 



O tooor-MO t^vooo 



0> 





iO l>0 l/J O OO O 

 « o O M o * m 



s 



r-~ rf 00 m o 1> 



> O\00 o 



o 6 



WOO fOO 



r? ri m 



On 00 CO o 



O 00 vo 



^ M IH 



M M ^ 



j>- to o o o 



On o o o o 

 "2 O d 2. 



O ro ro u 



M *t H O 



t fOCO o 



•to 



oo 



<*) rf h O 



m 2 2 2 



O 00 0\ o 



> 



I j 



03 *-< 



■+-> 

 T3 to 



II 



55 Q 



■8 



o 



a 5 to B 



<U w C .3 



^ -n ^ 



^ <*- J? S 

 03 o <a <+i 

 b oj o « 

 43 c a) 

 73 .5 o i~ 

 o +■> <u — • 



" si's 



D P -M 03 



a; a; 



£ 2 2 & o 



fli Co 



a -2 .2 



.3 .2 s 

 o > > S § 



«2 5 

 o K 



S3 .5 



.2 *d 



> o 



S3 ^ <^ 



c -2 *° 



a,, s 



N CO "<t «*i O l" 



00 0\ 



•Supdsgo J° 



SDI}Spi3}S 



