HOMOGENEOUS BEAMS 155 



^(Tt*^^ OCSC5CiC3Ci Tj< Tt* Tj* M( Tt* T}H OiO5O5C5GOOO OS Ci OS 00 CO CO CO 

 W<N<NM CO ?l W <N (N <N COCOCOCOCOCO COCOCOCOCOCO <*** Jt r}t T}< TJ. 



rooco ooow ocoiococoo ^t-QtNior- 898S22S222 



OOOO O O O *"^ *""* f H T-H T-H * I-H ^H <N i t r* G C^ 0^ C^ <N C^ CO CO ^ ^ ^ 



GCtfJCOO i-HOCCOM''* CO ** CO CO CNI H 



-KNCO-* co^tS 5ffi^5t ^^22358 ^Sco^^oi 



,000 



t>- O CO 



__ __ . _._ ______ cot-coio>o-*co 



>CO( 



O ocOCOOOH TfOscOCOOCO OCOiOO>O OO5COt^"O<NO 

 ^ OrHrt^Hr-KN I-H rn (N <N CO CO ^H CN CO CO -<t * CO CO * lO CO t^ 00 



IN <N * t^ OS ~H CO -HCOOt^O5^ r- O5 -H * CO CO O5 IN * CO 00 " 



^r^^iT-t n^n^ ' ^ ,_; ^ ri d d 



CO CO * C35 * OS (NGO^OCO^H lOCNOt^CO *i 1-1 O OS CO t^ 



<N CN IN (N (N (N (N 



xxxx xxxxxx xxxxxx xxxxxx xxxxxxx 



M IN IN CN N <N 



W (N CN CN CN <N IN 



