75 BULLETIN 299, U. S. DEPARTMENT OF AGRICULTURE, 
o 
o 
&3 
a^ 
U3 O 
J< 3 
rf2 1=1 
.S>o 
SO 
«< 1 
w 
^-^ 
S £ 
*s ~3 
~ 
c 
o 
H3 3 
6 
_ 
~~ 
pci 
-- 

_ 
_ 
,_, 
1 -*• 
.2 
w ' 
CM 
sn ; 
« 
00 
OJ 
o 
: 
© 
§ 
IO 
CM 
00 
CO co « 
CM CO CC CN O GO — -*i>-©cor~© 
CN 
VO CC 
ce 
re ce r- 
^ — - lt. ic L.e •- © © i- t- t- t- x 
cccc 
t> 
o ■<* cs eo oo«o £- cm«o th >e t-t ^ o» eo oo cm*o o 
cn 
lO 10i0(CONN00C0ffl0iOOOi-liHIN«re 
CO 
■* O iO O c£> CM *- CO- OS «0 O CD tH CO CM OO t}« OS T* 
o 
© r> t— oc x cr- © © o — N cn m m tl.~l.io 
c w x -t th n re r l<5 n x l^ rt t^ •- c n ■-■ c 
© 
t^ CC oc © c O 1 CM CO CO "* »© iO CO r- IS. OO OS 
-; 
j 
1 
"5 
o 
£ M « L" M K L<; h C L». M 5 C « » l^ IM C N 
L-1 
c/ ci ci C >- •- N cc ?: T- tf iC C N N K ci c c 
C 
! 
,_3 
1 
m 
T 
R 
1 
c 
r.CNV"«5L':Nc:C-r'H«^i-«C.r: © 
© 
C: C C -< M M r: -r t C c I- N OC C C C -h N 
-53 
o 
CO 
Sh 
~ 
NinnoN'«'«CN-«'oiot^'CNONie« 
»Q 
1 
C» © i-l CM CM 00 ■* «C »ClCC t~- 00 OO OS ©i-l i-i CM CO 
co 
iO 
cm 
5 
! 
cm © cc »c ce — © i~ iq co«a>t^cocoi-«OJ t^ co 
co 
OH j-C CM CO-UC-* MS cor- 00000 0-rt CM CM CO ■<* 
— ,-i rH , -r — — < ^- — ,-h ,- _ r;i cm cm cm cm cm 
i^ 
1 
o» r- co ■"<# eo c» jh cjs oo t»- <o ■* cm © © oo t- »o ^* 
iCS 
© 
■cpeocM»-t©-coooot-t-t~to»o-<TiTS'coeocMTH 
^m^t^scnxjcmmsticcm): 
r^CC©©©T^CMCNce-S<L.e©©t^CCCC©©.- 
ri n f: lc c n x s c - r-i cc ^- l* •- i» x c h 
rt H H r-. t- rt H - N N ?i M N d ^ N N r: M 
co 
cc©i-<cc-r«©oc©eM-3>r^cr. n-tncn >--. r- 
CM -*r »e '-r t- x ~ — cm re — u-r r— cc © — cm re -<r 
N 
::Nwccc-s:iNf:KTCNKCcri 
io co x ~ —< cm ■>- L.e r - oc © — i re o -~ cc c> -- ce 
h h m ii n M N ?J ^! .-) .-::?: r: rt ^ rt ^r t 
H 
H o.£f 
■g • 
•2 £~ 
•si : 
ci c 
cc r - ■ 
pH "~ 
C\ 
o 
1 CS 
: 
CN 
f: cr 
KrcN-COr 
I © © t>: t^ oo oc -d. 
-J. 
c © c-3 x ce © ue 
GC CC CS » CO i-5 rH 
lChncCCVLCw 
c: ri ~" ih »4 (n ce 
Cr-lXiONK' 
Cf-irtNCCrC- 
L.e -^ oc L.e NK": 
— ci el ce'-rr ^ ic 
KON 1 * 
p- CC LC 
i-iui co 
00 CO rH i-t«J CO 
CN © OC © -"f CM 
•« wj IC d N X 
I CO H © oc © ua 
; LC © © t-^ OC ci 
©'© © OC t^ ts t~- 
IQ © © t>^ oc ci © 
^r © oc © cm ^r i>- 
N X C5 ■-< IN N ■'T 
T-. r-I t+ CM CM c; N 
© © -r* © cm t^- ce 
i-i cm -r ue t-^ x © 
CM CM CN CM CN CM ce 
•ci-y sCrnN 
CM CM CM 
