FUNCTIONAL VARIATION 



93 



Q^VD OO ON ON O OO OO ^ w ** O^ H c^ o * < t^ ON N HH 



^ ,22222H!22~"2~22w_, 



r^r~^r-^o M <-> cc O\O Ooo TJ- o MOO ON r^oo toco co t-^ to r^ rf- to M -^- toco r^oo M T}- 



<* O " r^. t^-oo O>oo M r^-O M NO rp o\ to t~co ONOJ\M r-.pNt-^'-ioo poo tovo to T}- M 



oooooocococooooooocooooooocooooocooocooooooocooocooocooocococooooooo 



r^OO ONM fOtor^i-i ONO M t^M*ONTj-O to 

 r^-O fOO O^ONror^OO 'fqNi-' tovq rtCOCO 

 M M rotorovdvd\dvd t^-r^t^co r^r^-\dvd 



MMMMMMMMMMMMMMMMM 



HH \o <-> t~~. to Tf ro ONVO r-^ to O to M roco MOO ONi^tor^r^O fOON^CO M M O O M ro 

 wvpcOMi-jM^oqpoqp ONOO to r-, q\oq Cr\ON^rotoi-i p ro w -;_ o ro w M\O toro 



r-> r>. r^.\p co oq t-^co oq oq oq \p \o 



ON ON ON ON ON ON ON ON ON ON OS ON ON 

 roo i- 1 M w toro>oco fOO ^fco O ONMOO 



CO tOOO M O 1-1 fO ON rOOO ro N Tt- ON O tovn M\O r^ONwOOVO ONO\ONI-H M t^ w HH f-. 



T^ to toco O CO vO CO Thco vO M OO i 1 \O CO vO VO ^}~vO M vO ^vO ro ^t" i^ ro ^" r^vO t^ O M 



M Q\h-i M lOiOrJ-M M tOMCO " ONI^-t^M O >O\O VO M to Tj-CO M O - \O ~ ONONt^-O' 

 i-^ TJ- oo OO "^" i^ to 00 ON vO >-< ro 00 OO to 00 "* 



O ^ t^ t^ O OO i 1 t^ O ^ rooO O toco O ^ OO t ' tovO to ro O vO M M vO to O ^ ^"00 ro 



