XXIII] AFRICAN OAK. 147 
TABLE LXVIII.—AFRICAN (AFRICA). 
Transverse Experiments. 
Deflections. Total Weight is 
: ‘ Weight 
ht 2 duced 
Number | withthe | Afterthe| At | required | S2 |""to | Tequired 
specimen, | #PParatus weight | the crisis | to break af [specific] > cquare 
"| weighing was of each wba | gravity ie 
390 lbs. | removed. | breaking. | piece. 1000. : 
Inches. Inch. Inches. Ibs. Ibs. 
I 2°25 ‘10 5°50 1,301 982 | 1325 | 325°25 
2 2°50 05 4°25 97k | 1086 894 | 242°75 
3 2°50 ‘05 5°75 1,231 |1008 | 1221 | 307°75 
4 2°00 Kole) 5°35 1,086 988 | 1099 | 271°50 
5 1°75 “oo 4°75 1,014 | 934 | 1085 | 253°50 
6 2°50 10 5°25 1,046 | 962 | 1087 | 261-50 
Total . | 13°50 *30 30°85 | 6,649 {5960 | 6711 |1,662'25 
Average| 2°25 05 5°142 | 1,108°16| 99373} 1118°5| 277-04 
‘ RemARKS.—Nos. 2, 3, and 4 broke with a long fracture; 2, 5, and 6, short, but 
fibrous. 
TABLE LXIX. 
Tensile Experiments. 
Number Dimensions of Specific Weight the | Direct cohe- 
of the . * pieces broke | sion on x 
specimen. each piece, gravity. with, square inch, 
Inches. Ibs. Ibs. 
982 30,800 7,700 
1008 43,400 10,850 
ow on 
ica 934 | 19,040 | 4,700 
I 962 19,600 4,900 
Total. . ee 3886 112,840 | 28,210 
Average . vs 971°5 28,210 7,052 
