BULLETIN 493, U. S. DEPARTMENT OF AGRICULTURE. 
g >-oo = 
o o 
ooo oo oo ooo oo o 
iri lO lO rji -* COCO CO ■*)< CO COCO ■* 
oo oo 
co'ei cmc* 
oo 
icd 
c o. 
TPO OOH rH hv 
rH rHrH IH CMrH 
OWH 
ooo 
NCO <MiO 
OO OO 
C<lrHCO 
t^ >-- i-- 
ooo 
N 00 
oo 
oo oo 
CO ON 
cm rHrH 
rtX» 
(N rH rH 
(MO 
cm c%i 
©§. 
o o 
<M 00 
CO CM 
PH~ 5 
OrH CM 
OO O 
©•3 
^?t 
oc ffl 
cm cm 
rH O rH . 
IQO OCO 
CO o 
CO ■* 
%mm 
CMCMrH 
OrHrH 
IrH OH OrHrH 
CMCM rH(M 
CM CO CM •<* <N-*< -hi 
rHOO 
oo 
oo 
as. 
Eh 3 03 
'1 .a 
U5 O 
CM CM 
OO ON 
OWtj 
CiO OOO 
oS. 
Q° 
Sts 
rHOO 
ooo 
OCO 
CM*-*' 
o o 
Ir 
iCiO 
ir 
O UO t- IQ N0!0 
CO o 
CM rH 
o" d 
rH OO 
<4 
ir 
rH!N 
»OiO 
£Sr22 
cocm 
oo 
2?5§ 
OrHrH 
OOO 
00 'O T 
ooo 
t-00 w* 
O <M 00 tj< 
NN t^N 
oo oo 
.S-rtS< 
t^ ■"*! O ON 
100 WW CM 
IH hM 
CM 
*3 3 3 3© 3 3 "3 "3 3 3 o © o 
.S3! 
(B rH © © O O rH 3 rt33 
I? OO OO g <^ 
S3 to 
© fcD 
O SjO 
O 
^^^ £^ 
ojBo^ oo oo o ©' © -£ o© 
© to 
O oo 
o © o © ©-£ O o 
£< £< 
© <H 
© 
E o 
"SrQ ■ 
a : 
IS 
OQ 
otl 
oo 
!M CM 
CM CN 
CO OP' 
NM NN 
OO OO 
IM CM CM CM 
<N cm <N CM 
COS 
n 
Tf toa co 
AM 
O CO 
