PREFACE 



3 



Thr l.rcs.Mll Udrk i> illtcll.Inl t,, mrcl llir «;ili1-.ur ;i hiruv llUlllluT iif pcrsiilis. 

 .•spcci.-illv ^poi-lsiiicil. -.vhd Miv ililcivslc'il ill l,ir,l> :iii<| w.iiiM like |,, klH.u lli.'ir liMliii'S. 

 '"I' "''l''ii liiiil il iiu cMsy l;isk In idciitirv lliciii Kv llir •• Mnl lM«>ks.'' 'l'., ;ill siicli I 

 ""'''■ 'lii^ l>^'',v. ill wliicli ihr sp.'i-ir-, aiv .•iii:iii'^vi| in '^iniip- :icr(,nliiiLi In -izr. :ili<l 

 licllfVc il will I'lKiM,. MIIV (Mir llllf:ililili;ll' uilh liii.U l,, i,|rli|i|V uilh c piiralivc r;isf 



Miiy >pccii's (iT ■ North Aiiicriciin .Imih'dx . 



I'.inls V;irv so liiiicli ill xi/,,. |li;il III,. /,.„,,//, ,,|' .|||v ulir sprrinicii ,■,■ | 1„. Mcccplcl 



as M siaiMlaid I'drdilMT- nl' ili,. same >pccic-. Tli,. Irii-ili iii,.a>iiiv is. iirv.ailirlcss. 

 "' ^■'''1'' '" ''iiaMr iH III I'driii an appin\iiiialc idea nf ih,. <i/,. ,,f the l.ir.l. -I'li,. l,.||o|li 

 >>( Ihc »■,,„, is. li,,u, \cr. iniirh |,.ss van:, Mr. and i< an inipniianl aid 1(. llir idcniilira- 

 li"ii "f many >pr,ar>. In Tad. ih,. vaiiali,.n is .-u small and .■.,ii-lanl lli.al. allnuino 

 \<<v p(i-Mlilr I'Mivm.-. ihry may li.' .airaiiLli'd in -i-niips a^rurdiiii: In Icirjilli nf wiim. 



Tlir iiiciililicalion .if any sprcirs ihrii lire ,> a very -iiiiplr mailer, a- ii-mdly the 



l'ird> rniiiaiiird ill racli -TiMip aiv -~<i Irw in luimhrr ilial rliarai-haisiic difriTrncrs in 

 cacli s|)('cifs art' easily indiealed. 



I.i'l lis a.ssiinie. lor e\aiiiple. \vi haw hefoiv lis a Mrd uiiieli u e uisli In idililirv. 

 We llrsi measure ihe will- ( -ee direeliniis Im llleasiireinellK. illll-l rat.'d . pa-e 7). and 

 we liiid Ihe wiim- measures :,.'M) inelies huiu. U e llnu lui II In the •• Index In KeV." ami 



liii'l lliMl (.rniip I. <'nnlain> l.irds liavim: ihe wIhl: inea~iiriiiLi Irnm ."...".ii In ('..."in inches 



'""-• ■I'llrilill- In (irnlip I., we lilid il , laills Iw,, -eeti,,||v; S,.,-linn I enmprisilli; 



'lucks havin- a hind Ine willi,,iii Ilap nr Inhe.' and See|i,,n i' ( pii-in- diieks havino 



•' "•'!' "II III'' liiii'l '<•'■. As niir diiek has a Map mi ii- hind Ine. il esideiilly helmi-s 

 I" lilis seelinli. We lili.l Seelinn J divid.'d in IWn pails; I'ail 1 „i|h lail lealhers 



> MMn> ,.l Ihe /„„/,, ,. |{i^,., |ni,.K,||,,veii ^llfihllv il.-iiien.Ml liiii.l I,,,. ii|.|ir..:„l,in- ,-i ..,„„// il; i ,, ,. 



h.'v.TbrpM.,,,,,,::!, ln,„„r,.iu,.|||ieiM«lll, the /•»/,•„„//, ,• s,..-, Diiek-, « lile n r ,i I, Ml.,i; « i.i.i. imm 1 nn |. 



IuIji' like ll.'ni I'll the hiii'l tni'. 



I 



4908b 



