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W i> \\:\\c \c:\v\H-d ihni \\\c iliirk in (ho (\i:;i:; pns^cs 

 (hroimli ;i si;ii::(> wluMi it poss(^ss(^s si^\crnl \\(>11-(1(^- 

 M^loptHl uills. This pi'tncvs ih;il in \\\c ihin. (hsiniii j);ist 



\\\c nwccsiovs ot 1mi(1s \\ (M"o once* 

 .•uiunlic niul lish-hk(\ l>ul how nhoiit 

 hiiiiis? I'ishcvs \\:\\c ii(>iu\ ;nul iiulcHHl 

 ill I luMT ;uni;tl ic ht\^ siu'h (>ru":ms would 

 lu' usi*l(>ss. NoN iMt h(^lc^ss, ns w t^ slinll 

 ;stH\ th(^ hums {){ vc]^\\\cs. lurds, .•uul 

 ; nininninls :\vc lt\u;;u'it.\s ivoiu (lie civa- 



f ii|^-^^^ ^i,-^.s of \\\c son. 



Mnnv lishi^s \\:\\c within lh(Mi' 

 lHuhi\s ;i t hiu-\N nlKnl snc. known ns 

 th(^ sw ini-M;ukUM-. This is hUol \\ith 

 i^ns. ;nul ;is thc> lish nsconds to the 

 surt";u'0. ov dwcs to w hiM'o lh(> pros- 







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f l^i"^^; suiv oi [\\c wntor is \rry ufi^at. ihi^ 



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\.# nnunnit o\ i;as xnru^s; so that tho 

 I tspiM'itic gra\ity ot tht^ tish chriniios 

 B with tlial oi {\\v watiM'. This sw ini- 



hknldiM' IS ut,MUM"alU ronniM'ttnl wiih 

 V \\\c thri>at 1\\' a dohcati^ tiilu^; and 



VlG. livv — Inns: ot i^hamo- . , . 1,1 



loon. loioslK-ulouinsi con- HI t hl^SO t WO St HU' t UIVS WO haV(^ t tlO 

 dilion in bird. , , r 1 1 • 1 • 1 1 



lnuniWouiuvs o\ \\\c hn\ls luuii's aiul 

 trai'hoa. TroiM' ot' this is to lu^ t\nnul in thi^ growth ot' tht^ 

 hiuii-s in aU Mninu- chirks. A tin\ l>nd aj^pt^irs npiHi tho 

 priniitiNo ivso[>hai;'ns. just hohind [\\c \\\[\c i;iU-i'kM'ts. and 

 iiuToasos in sizo until it is kafU'iM" ttian tho t'otnl-canal itsoh". 

 It thon in turn di\idos int(^ two oqiial parts whit'h Inn'Oiut^ 

 dinunutiNO tkips. of canals tlu^ iH^ginniniis oi \\\c lungs. 



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