284 
REPORT—1840. 
Box 6. No, 2. Class No. 6. 
oH zs Commercial Character of Iron. Cold. Ges by How Cast. | Specimen 
Z 20 8 Blast Fracture, s2 bi 
Aes 3 
B12 | No.2. Doulais. Common bar....|......... Fibrous. Green | 7:587 
Box 8. No. 2. Class No. 7. | 
| 
¢ 1 
| B13 3 hen ie heda ar Hot |Close bright gray| Green 7-138 | 3 
Box B. No. 2. Class No. 8. 
1a 
B 14 {# eel ie ‘San No. 2.1) trot |Close bright gray) Green 7-168 
1 
BIS [1 eee Ey Scrat cna, }| Hot [Closebrightgray| Green | 7-168 
B16 |{} Dorowynt § Scrap .vsce. {| HOt [Closebright gray) Green | 7-168 
1 No. 1. Calder + 4 No. 2. a 
B17 {@ retek. af * a pie: Hot |Close bright gray| Green 7-168 
1 No. 1. Calder + 4 No. 2. saa : 
B18 se Pentwyn -} % Scrap ..:...... Hot |Close bright gray} Green 7168 
Supplementary Table. 
eu8 
ee Oe FI 
ae aS Protective Paint or Varnish. State of Covering after 387 days’ exposure. 
vo 
RS 
B 14 | Caoutchouc varnish ........sseseeeeeeees Varnish not visible «1+... ssseeesseeeeeees 
B 14 Best white-lead paint.......... Seicsganacé Paint Zone  ...seeeeseereereees Baeteae ss aaeee 
B15 | Copal varnish .......ssseeeeseeasee eeveeees Varnish not visible .......sscecesseseeere * 
B15 | Asphaltum varnish........... ... SOCCER: Varnish still perceptible .........sescesees 
B16 Mastic varnish ...ccccccccccpscccsescecs 5.| Varnish not visible ..c:csccasssaseccevenene 
B16 | Swedish tar .........++. SANBEe nee eas Scarcely any remaining ... .......00. 
617 | Three parts wax + two parts tallow) Converted into adipocere.......+....++. coe 
B17 | Coal-tar, laid on hot ....... tea neaataee ee .| Still perceptible ...ssccessesseseeeeeseeeres 
B18 | Turpentine varnish .......ssseceesensee Varnish not visible ........+++. nace B 
B18 | Drying oil .........ccsseceeesecseceeseeeees Not isible )sccccscesesnessonge edesesccnos wae 
LI re S 
cb 
