FLOW OR WATER IX DREDGED DRAIXAGE DITCHES. 



25 



fsfl 



■ 0.2 W 

 £-rt.o || 



111 





5* • 



O © w O 





C -■ vT— 

 o o ftg 



a> 



fcS' 



.O «o P,"g C<1 



?S * S to 

 Z? ,— ' On 



ti .2 1 - 1 

 ti« Jag 



-2 © 



4i ffi C > • 



•S-ge - 



fl'ea-S a> 



•-tSflgo 



Pa 50 . 

 •s^S « 



S 2 O e3 JS 



C) 



s 



iC •* ri O OC' 



a ci ci ci cj 



o coo o 



GC QC 00 OS CC 



os as 0i ci to 



O O O T-H T-H 



O O Q OO -i 



•£. r- ic cc <m io 

 .s? kc <o" co* t^ r-^ 



■ OOOhNO 



£= t-3 c" cS ci cc 



j^rcxco 

 t*cc re ^f ^? ■*** 



« M •sr h ;o 



$g ■ tt 00 Oi N ti 



C ' v H O H LO O 



5 L « o r^oscqio 

 >^ r-T 



CQ t-Ht-( 



^ lO *C C <-C IQ 



> 5?« 3 ft 



•^ £*- OS iC CO OC O 



tO eO CC' CD CO 



'53 ©J3 ^"Jh 



146908°— 20— Bull. 832- 





&s 



ej 



Q 



d 



c 





t/ 



-! 



c 



(Tl 



o 



c 



9 



(-1 



c 





a 



<n 





ai 



3 











ti 



o 

 > 



& 





.'. 



- 



> 



J: 

 3 



- 





d 



E 



S 



c. 







at 



K 







~ 



I" 



r 



> 



« 





:/. 





cs a 



co"o ui rt"3 Ej 



i* ids*" 



to > >A3^ rj 

 t « . ep ce « S = 



S ™*2 r o in g 



C5 W S O ' > S^ 



sT>£°'2 2^ 



k , ^2 c ?■ Oi • 



c ri h m y„ o: h m o 



C-i O O O ^r *r -r r i *— 

 -r-r-rrtTCrccTccc: 



■* » « M M X M tO h 



c-: i" -~ c rt — ■ i- co r: 



tT .- i- o — — -r i-t — 



o oooooooo 



OOOO'OOOOO 

 OO'OOOOOOO 



OS CO O CO Oi t- C- TO o 



«^^VCOOCCXtM 



c^icccocccoco»c^o 



OOso:»OX■Ol~*l^" , ^* 

 rHr-^i-Ic^CNC^COCCCO 



osooooooo- 

 io eo t* o td od m- - C' os 



-~ - - -^ CO OS 

 ' cc t~ re 



h Tt* rf iC "^ i ^ -r -JZ ■— . 



cCCl-^-OO'OOOO 



r-cic ic cc r-~ A o c i 



o v: os r- cc t— i-- cs -~c 



t-h ?-l CI CC "H- T O '? 1 CC' 



i CI O CO O t-H 



t^ Ji X X Os Os T-i -H- t> 

 cc cc ;t :: c: cc »c uc o 



W O C th lc M M X ■* O 

 -er ttO lC O i.C* OS OS O i-H 



eo to --C i^ i> i> co i> t* 



cs C- Cs Cs cs Cs OS OS OS 



cc" cTcfl *^T4t>Too'»4Vo' 



HC-lCNCCMrHC^W 



(C^KOiC. 



ft S ^ '" o 



«£i^ 





a c ■& m d 





variati 

 irregul 



y no v 

 fig. 2; 





•Sijc'SK 



^JCOH 





o?!., ver 

 loves, s 

 all dep 

 few, pi 

 (Seel 



B^S'S • 





llsls 



£ %. u 



csd»ft^ 



»SSg 



Cc« » © s 



-^ ^ ^ p ^ 



© w C S 1 ^ 



"- 1 <e >3-S 



to " J a cs 4s 



^.s rj3 g 



traigh 

 ation 

 egular 

 ttom; 

 1. Co 





-CS ^^2 C 





s S'S 2-fl 





o 



CI CC CI CI CI 



O O O o o 



CO iO t-- CO CO 



N M LT h iO 

 ■OOOCO^ 

 CI CC CC CC CC 

 0;0 O.O O 



OO OO o 



oo oo o 



co t-h r» co tr 



•v oc cc os cc 



CN CA(NCC"^ 



LC OS t-H Tt" O 



t-h^h cn ci c4 



CC O i-C O CO 



TO OJ H N QO 

 t- 00 OS ^P CO 



id OS 00 0C' -H- 

 r-H CO OS id CC 



t-H «-i T-H CO' Tt* 



HiHTf ^tiO 



(N OC OS 00 TT CO 



cc cc co i-c cd os 



c3 c3 c3 03 c3 



IOCDN00OS 



