(iO DKSCUII'TION l)i;S I OSSILKS 



/inN<in,>ns ( dli < s|m . < m .Ii.Iih.m. «I< I I //iiijnnhfDHi (lOrli 



(P\i II /ni n<l |. 2i(. |)l (((\lli lu 'i . <)) pii -on .|M|vs, 111 



Ihmiimm(|> pliix ,„iiH.i(lil>l< Hmhi I).i<..l m_ill<ll\ .1(1. I I nHlal- 



iltm (lOil. (III. III. phiidii lu 7 s •)), |Mi .s pi.)p..ili<.iis iss,/,|iil, 



inil.s ,1 M ll.llls IMMI- pp II- I h ll, S pllliol ipi I ll (h'.lliplKHI 



(IC (I Ol huilV p II I IK I .hi lu III II. III. .Mip plus IIIIIK < ( ( s (l< l,\ < -p, , , 



ii..i|s<il.i..iis I I n„nu>umi,s,s Mhh p -n\ pi (((\M lu I 'r / il. 

 h.pi. Il< .m I I .lisliiuii.i I h il« II pii Mm..>l< l)ii<< il ii.Hi iiioiiili (I I ill 



HIH. .1. s|||,.,.)IM.nlll(pi.s K.mIkI.s I.s MiIiIII. ill Il.l.lllll ll|sM.I.(i|l 



.pi.l.pi. .sp,((s M„ lll.s ,1, hlKlIll N.lll. .iKHUIs pillKipil nil 



niilinhi (...Ml pi ( \\\MII li, > «.. mil/ pi W lu i) ,1 (inis- 

 A i.uH/l //) p I I pi \\\l\ lu !l, <pii I I. <<»l. mil 1). iM.oup 



moiiisliu. ii.ip.iili.iiiii.il. III. Ill il II /uin/no (...l.ll i^ 1/ \iii.l. 



pi W II. l2)(l.,iill.s,ol I iv.Miiniil.s sum l.( iM<(mp|,liisl.Ml(s 



N.iiisiImI -Mil. «s, M .lOiiiiiiiis (JlliJIov, iiiiiislH ^..iLi^ii. 



I».>lgc. 



Fig. i>i. Ml.! lalcralc (!.■ la (•(upiill.'. 



I- iu. 25 , v.io sui- les <n>(Ii..|s. 



( i.iili |. 1 1 / I i ' ' 1' " I 



I Ml I 11 1 



>.l I |l I I < 



