OF ARTS AND SCIENCES : FEBRUARY 14, 1865. 



451 



Cast-iron 20 feet long: 



if solid, as in the first column, or if hollow, as in the succeed- 

 the respective headings. 



Diameter 

 of Pillar 

 outside. 



Inches. 



2 



2^ 

 2| 





4f 





6i 

 6f 





8f 



91 



n 



10 



1| Inch. 



1.72 

 2.17 



2.70 

 3.31 

 4.00 



4.77 



5.63 

 6.59 

 7.63 

 8.78 



10.03 

 11.38 

 12.84 

 14.41 



16.10 

 17.90 

 19.82 

 21.86 



24.03 

 26.02 

 28.02 

 30.09 



32.22 

 34.41 

 36.66 

 38.96 

 41.32 



1 1 Inch. 



2.20 



2.74 

 3.37 

 4.09 

 4.90 



5.80 

 6.80 

 7.90 

 9.11 



10.43 

 11.86 

 13.41 

 15.08 



16.88 

 18.80 

 20.85 

 23.03 



25.34 

 27.64 

 29.81 

 32.04 



34.35 

 36.72 

 39.16 

 41.67 

 44.23 



IJ Inch. 



2.77 

 3.41 

 4.15 

 4.99 



5.92 

 6.96 

 8.11 

 9.38 



10.76 

 12.27 

 13.90 

 15.65 



17.55 

 19.57 



21.74 

 24.05 



26.51 

 29.11 

 31.43 

 33.83 



36.31 

 38.86 

 41.49 

 44.18 

 46.95 



If Inch. 



3.44 

 4.19 

 5.05 



6.01 

 7.09 

 8.28 

 9.59 



11.03 

 12.60 

 14.30 

 16.14 



18.12 

 20.24 

 22.52 

 24.95 



27.53 

 30.44 

 32.91 

 35.47 



38.11 

 40.84 

 43.64 

 46.52 

 49.48 



1| Inch. 



1 1 Inch. 



4.22 

 5.09 



6.07 

 7.18 

 8.40 

 9.75 



11.24 

 12.86 

 14.63 

 16.54 



18.60 

 20.82 

 23.19 

 25.73 



28.43 

 31.64 

 34.25 

 36.96 



39.76 

 42.65 

 45.62 

 48.68 

 51.82 



2 Inch. 



5.11 



6.11 

 7.24 

 8.49 

 9.88 



11.40 

 13.07 

 14.89 

 16.87 



19.00 

 21.30 

 23.76 

 26.40 



29.21 

 32.72 

 35.46 

 38.31 



41.26 



44.30 

 47.44 

 50.67 

 53.99 



6.14 



7.28 

 8.55 

 9.97 



11.53 

 13.24 

 15.11 

 17.13 



19.33 

 21.70 

 24.24 

 26.97 



29.88 

 33.67 

 36.54 

 39.53 



42.62 

 45.81 

 49.11 

 52.50 

 56.00 



