. The Canadian record of science. Natural history; Science. A. B. C. D. E. Copper ., .. ... Iron ... These analyses show that copper tends toward the top and outside of the casting, while nickel and iron tend to concentrate toward the centre. A half pot was now selected in which radial cracks seemed to show the centre of segregation. Small portions were broken off at the points indicated and analyzed as follows : Fig. A. B. D. Copper Nickle Iron
. The Canadian record of science. Natural history; Science. A. B. C. D. E. Copper ., .. ... Iron ... These analyses show that copper tends toward the top and outside of the casting, while nickel and iron tend to concentrate toward the centre. A half pot was now selected in which radial cracks seemed to show the centre of segregation. Small portions were broken off at the points indicated and analyzed as follows : Fig. A. B. D. Copper Nickle Iron These samples showed as before the upward and outward tendency of copper, but did not so clearly show the inward tendency of nickel. The reason was found to lie in the manner of sampling, as it was found almost impossible to break with a hammer the sample desired, at the exact point in question. In order to get a correct sample, and to map out, if possible the variations of copper and nickel, a quarter pot was placed under a drill and sampled as indicated in the following sketch by drilling with an inch drill holes one half inch deep at the points marked. These samples were then carefully analyzed, and as they were entirely free from slag, the sulphur was in each case taken as the difference between the sum of copper nickel and iron and 100 per cent, which has been found to be very nearly the correct amount. The entire quarter pot was now crushed, quartered, sampled and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Natural History Society of Montreal. Montreal : Natural History Society
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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectscience
