410 SEVENTH REPORT—183/. 
Tasie XVII.—Coed-Talon Cold Blast. 
To determine the relative strengths of Coed-Talon hot and 
cold blast iron to resist the transverse strain under different 
degrees of temperature. 
No. 2 Iron. No. 3 Iron. 
Experiment 6. Experiment 7, 
——— — 
Depth of bar, 1°030 || Depth of bar, -995 
Breadth do. 1-030 Breadth do. 1°005 
Distance between 
supports 2 ft. 3in. 
Distance between 
supports 2ft. 3 in. 
Weight 
gla |Z legal) Wit [rem 
2/38! @ | s4|————— 
2182] 2 | £2|| 900broke | 212° 
Silas! 8 | ad 
> 1A 5 |a5 ry ies 
5 a | Broke in boiling 
eh ——|| water. 
112 |:034 2 
224 |-069] ... os No. 3 Iron, 
336 |:106 ers Experiment 8. 
448 |"144| -009 |193° —— 
560 |"185| -O11 Depth of bar, *995 
672 |-231| -016 191 Breadth do. 1/000 
784 |°281| -021 , Distance between 
812-293 |broke| ... || ‘ePorte 24: Sin. 
Weight 
in lbs. Temp. 
Broke in boiling 
water. 
Broke in hot water. 
No. 3 Iron. 
Experiment 9. 
Depth of bar, 1-015 
Breadth do. 1:021 
Distance between 
supports 2 ft. 3 in. 
Weight 
in Ibs. | Te™mp- 
956 broke | 600° 
Broke in melted 
lead. 
No. 3 Iron. 
Experiment 10. 
—s> 
Depth of bar, -987 
Breadth do. +997 
Distance between 
supports 2 ft. 3in. 
Weight 
in Ibs. | Te™P- 
934 broke | 212° |/1124 broke | 600° 
Broke in melted 
lead. 
No. 2 Iron. No, 2 Iron, 
Experiment 11.||Experiment 12, 
Depth ... 1:004 Depth .., 1°026 
Breadth 1-°005|\/Breadth 1-030 
Distance be- Distance be- 
tween supports|| tween supports 
2ft. Zin. 2ft. Zin. 
Weight in Ibs, || Weight in Ibs. 
672 broke|| 784, broke. 
it, after the||This bar was a 
weight hadj|ideep orange 
been on half ajjcolour in the’ 
minute. The|\dark. There 
defiection’ was||was no time to 
considerable. |jmeasure the 
The weight)deflection. 
was laid on at 
once. This bar 
was percepti- 
bly red by day- 
light. 
Coed-Talon No. 3 cold blast iron exhibits greater density in the arrangement of its 
crystalline texture than the No. 2. Colour a whitish grey, interspersed with a num- 
ber of minute luminous crystals. 
Results reduced to those of bars 1:00 inch square, and 2 feet 
4 inches between supports. 
Breaking | Ultimate 
Product Xd 
Temperature | Modulus of Seas G f 
Fahrenheit. elasticity. is ote eee 
Experiment 6............] 193° — 191° | 14398600 | 743-1 301 
Experiment 7....0.s0008+ 212° besevanGet 905-0 
Experiment 8......se.00 212 Descassaaaae 944-0 
Mean...... Deno taadscucncrd 924-5 
Experiment 9.........++ GOOK momniisconecaeoce $09-0 
Experiment 10 ......... 600 SR PHA 1157-0 
1033: 
Mean...... 
Redbydaylight} .........+.. 
<ec | rer 
Experiment 11 
Experiment 12 ......... Red in dark 
