1817.] Experiments on the Strength of Wood. 295 
A Piece of English Oak cut into 15 Pieces, each five Feet long, and 
two Inches square. This Piece of Wood very irregular and cross 
grained. 
Weight. /Curvature, | Difference. No. 1. Weight. |Curvature, |Difference. No. 2. 
14 Ib} 0° 09'} Oo 09! 14 1b} 0° 10/} O° 10 
28 0 21 0 12 28 0 24 oO 12 
42 0 30 0 09 42 0 32 0 12 
56 0 42 0 IZ 56 0 42 0 10 
70 0 54 0 12 70 0 53 0 iil 
84 1 06 0 12 8t 1 05 0 12 
98 Db 37 0 il 98 i 1G 0 li 
112 1 30 0 13 112 a ( 0 li 
126 1 44 0 14 u 126 1 40 0 18 
140 2 02 0 18 = 140 1 54 0 14 
154 | 2 19] O 17 E 154 | 2 08] O 14 
168 2 39 0 20 Ss 168 2 28 0 20 
175 2 54 0 15 De 182 2 54 0 26 
182 3 09 ele 3 189 3 06 C es 
189 | 3 24] O 15 Pe} 196 | 3 26} 0 20 
196 3 48 0 24 2 203 3 42 0 16 
203 | 4 06] 0 18 A 210 | 4 07] O 2 
210 4 30 O 24 217 4 30 0 23 
217 5 18 0 48 224 5 30 1 00 
224 6 12 O 54 231 6 36 1 06 
231 1 Sp 0 18 238 0 00 0 00 
238 8 42 ©: 12 
245 0 00} O 00 142 Mean 
147°9 Mean 
Weight. |Curvature. Difference. No, 3. | Weight. Curvature. | Difference, No. & 
14 tb} O° 12’) OO Ig 141b} 0° 10’; O° 10 
28 0 24 0 12 28 0 22 0 iW 
42 0 43 0 19 42 0 36 0 14 
56 0 54 0 ll 56 0 52 0 16 
70 L a2 0 18 70 1 10 0 18 
84 1 30 0 18 $4 1 iso 0 20 
98 1 54 O 24 98 1 56 0 26 
112 2 24 0 30 112 2 24 0 28 
126 2 56 0 32 126 3 00 0 36 
140 3 30 0 34 140 3 36 0 36 
154 4 20 0 50 154 4 30 0 54 
168 5 00 0 40 168 5 30 1 00 
182 6 00 1. 00 182 T 00 2 00 
196 {60 1 30 189 7 »30 0 30 
203 8 48 1 18 196 9 00 I 90 
203 0 00 0 00 
111-5 Mean 210 0 OO 0 00 
121°3 Mean 
