BULLETIN 869, U. S. DEPARTMENT OF AGRICULTURE. 



"J* 



l»3 



Coefficient 

 of varia- 

 bility. 



r^ »o o int^occioco«03t*oC' n^©ioCfficx-*icfi^ct^C'r^C'r c r~ cn .-- •*< 

 ** cc -m* cN^ffioioi^NWfN eo co co »© cd , cl* io oo co io "v oo w co ©o oo co co io ec ro .o -^ o co 



-H-H-H -H-H-H-H-H-H-H-H-H-H -H -H -H -H -H -H -H -H -H -H -H +1 -H -H -H -H -H -H -H -H -H41-H-H-H 

 — a o cn i- »(6»«o:iccn eci-r.M/cc^/T-iccM/scCH co — i - c i~ 



■^i-^t^ *dcocc'«^'^-*oo»did idc^o^LO'i^^poid'^^-^ccioio^-^oiOTO co* -r re -r :n 



Standard 

 deviation. 



OOO OOGOOOOOCO OOOOOOOOOOOOOOOOOOOC o o o o o 



-H-H-H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -U -H -H -H -H -H-H-H-H-H 



ffi»oto -r o o mm o cn x r~ o o ^ w c c c i . x ^ r. / u: ■/ l- c ^ c r. m m c c i^ m n si 



O *M mM ^H^^^-J^H^H^H^^Hr^ mMmHCNmMCNmMmM^mMmM^HmMmMCNCNCNmMCNCNmM CN MM MM — O 



o 



a 



03 



.— t » — < -. — 1 HWNNCINHH^H NMCO«nrtMCl»nNM.H«NN«NWN CN CO CN CO CN 



OOO OOOOOOOO'OO OOOOOOOOOOOOOOOOOOOC ooooo 



l-H-H-H -H -H -H -H -H -H -H -H -H 41 -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H -H-H-H-H-H 



cNioia ccco-—xx~-:ocnmmo i — ? 3; CC' « -h i.- rj l- * ^j -t ic io l* ^i ~ -M-* l:i-i-:il: 

 X cc cc o »o »o *o -i< io t*- i~ r— r-- m* co »o t~ co i^ (^ r~ co co co o c o o o o o c. c. r^i-cc;c 



f-M mH mm CN^CNCNCSCNCNCNCNCN COWMMrtCOKMMWW^^COK'tMI'Wn CO CO CO CO CO 



"3 



o 



Mf r^ co HccoMcNccooiNtr: lOHO^acNEicxNNNHXnccxj; co -r -t co cn 



CN C "O OHHHHHOOOO lo CN -m mm rt CM mm mm — <MMCN-f-Ti-Ot~CO-TCOCNCN I- 



t-l 



"S 



a 



| 

 >> 



g 

 a 

 bo 



p 



o 

 >> 



1 



o 



CO 

 t- 

 CD 



g 

 O 



§ 

 5 



CO 















































































id 















































































cs 















































































o 

 •4 















































































00 































































- 















to 























































MM CN -< MM ! 















mm 



















































f-i«N ■*■-<•* CO 



CO 

















































- 





- 



N -r X L- to CO »o CN mm io mm 







O 

 -* 





























- 



mH CN mm co mm CN CN immicio^-tC/NM O mm 

 CN CN ^ CN CN CN CN ^ 



"" i 



oo 





























'fCMONNC.NKN^O.C^'-^Or.-M O t~ CO CN CO 

 «CNK«rHrHrt- CN 



co 





























Zr/.LOloyjUIOI^XKHrtWL'JMnHMH io L-t^ I~ CI 



mmmm mm — cn 



3 





























CN CN CN mm 10 CN mm 

 CN 



CC CN -M. 

















s 



rt « : 



cn 





















-^ 



iH O 



CN 



■h 

























rt 















o 









CO 











wt CO IO C5 



















"- 

































00 

 CN 









re 





CN 

















































CN 









iO ^h i-h CM t* iC 't 



















































CN 







»-( cOeDt^-^b-OOOCOt^O 



















































CN 





coo 



































































o 

 CN 



00 coo 

 iOCN 







































































00 



CO -TO 







































































s 





-r —< 







































































it- 



CVS 





s T 



<M* CN CM CM CO CN CN CN «N 



3.2 

 3.2 

 3.3 

 3.3 

 3.5 

 3.7 

 3.7 

 3.8 

 4.0 

 4.9 

 4.1 

 3.4 

 8. 1 

 8. S 



3.9 



- 



C 



EN — 



-T CO 



f i-oeo 

 cd cd -r -r 



d 

 S 



>• 



1917 



1918 



1916 



1917 

 1917 

 1917 

 1917 

 1917 

 1918 

 1018 

 1918 

 L018 



1916 

 1917 

 1917 

 1917 



1917 

 1917 

 1917 

 1917 

 1917 

 1917 

 1917 



1918 



191S 

 1918 



1918 

 L918 

 1918 

 1918 



1918 



1916 

 1917 



1917 

 1917 



~ I = 

 - g : 



- '^ 



j-cl's-' ;£■ pi,' el." cl Cm &.£££;£►£ £?!* (!.;-£, -1:1;- =1:1 ;!--:- —'—:- — — '-- — ----- 



'(5 



« 





So 



o 

 3 



N 



''e 



J 



:• 



- d - 

 a5 



io 



"- 



1 



■ -1 



I 



3 



,- 



-1 



- 





ex 



B 

 J 



- 



- 



- 



-3 



1 



■f 



CO 



1 



"2 



; 



;■; 





c 







J 





j 



i 



^ 



3 



CN 



j 



3 



1 

 J 



r 

 1 



7 



|M 



- 



■2 





■- 



- 

 •- 



3 



'4 



i 



