Bui. 249, U. S. Dept. of Agriculture. 
Plate VIII 
k 
1 
S/f/YSSS 723 
MS orcEM 
9 OAKS 
- 
1 v 
\ 
1 
SP£C/M£MS C(//?£0 2 
ENTTO SMO 
— - 
^v^ 
(i/r/WG&t* 
f W£J6 
wras£z>/H5 
T£A£> c 
?rs7z 
2/CAf. 
yrrj 
^ 
■"•-- - 
--- 
.^, 
\ 
\ 
\ 
k -^ 
\ 
\ 
w 
V 
\ 
^ 
^c- 
s. 
— — <> 
077X 
IW S7 
■4//04, 
<?D SA 
tVD 
^ 
k, 
^ 
^ 
22 
1 
1. ! 
__. 
4//? CC/AE0 

"1 
18 
^ 
■v^ 
CX/Z5/ 
£>£*/ 
V COX 
^ 
"*^> 
■■^^ 
•^. 
^^S, 
/ 
l s^.^_ 
yS 
^ 
\ 
/ 
\ 
y 
\ 
v\j 
!\ 
\ 
3 
< 
V 
_S/AWP*L ^ 
MiYD 
\ 
\ 
4 T 
] 
1 
> 
\ 

> '- 
? $ 
15 * 52 $ % § 5 
&£/? C£NT C£M£/VT TO TVTAtL M^C 
% \ >JT V 
«) S) N fi 
Diagram Showing Results of Toughness Tests of Cement Mortars. 
