at Different Temperatures
| Expansion | Density | Weight of | Corrections | ||||
| Temperature | —— | —— | 1 Cubic Foot. | from 1000 ozs. | |||
| Fahr.° | 1000 Units | 1000 Units | Ounces | in 1 Cubic Foot. | |||
| of Volume | of Weight | ||||||
| 32 | 1000·13 | 999·8 | 998·1 | ||||
| 39·2 | 1000 | 1000 | 998·3 | -1·7 | oz. | ||
| 45 | 1000·1 | 999·9 | 998·2 | -1·8 | „ | ||
| 50 | 1000·25 | 999·75 | 998 | -2 | „ | ||
| 55 | 1000·55 | 999·4 | 997·7 | -2·3 | „ | ||
| 60 | 1000·9 | 999·1 | 997·4 | -2·6 | „ | ||
| 62 | 1001·1 | 998·9 | 997·2 | -2·8 | „ | ||
| 65 | 1001·5 | 998·6 | 996·8 | -3·1 | „ | ||
| 70 | 1002 | 998 | 996·3 | -3·7 | „ | ||
| 75 | 1002·6 | 997·4 | 995·7 | -4·3 | „ | ||
| 80 | 1003·3 | 996·7 | 995 | -5 | „ | ||
| 85 | 1004 | 996 | 994·3 | -5·7 | „ | ||
| 90 | 1004·8 | 995·2 | 993·5 | -6·5 | „ | ||
| 95 | 1005·7 | 994·3 | 992·6 | -7·4 | „ | ||
| 100 | 1006·8 | 993·2 | 991·5 | -8·5 | „ | ||
[29]. ‘Some Gentlemen at Oxford in 1685 determined the weight of a cubic foot of spring water, or 1728 solid inches, to be 1000 ounces averdepois.’—Kelly, Metrology, 1816.
[30]. For this reason the custodians of the metric system have abandoned the cubic decimetre of water as the basis of measures either of capacity or of weight. The kilogramme is now, like our pound, a certain metal standard, and the litre is a measure containing, more or less exactly, a kilogramme of water. A perfect litre standard contains 1000 grammes of water at 39·2°; but 1·1 gramme less at 62°, 2 grammes less at 70°, and 3·3 grammes less at 80°, a very frequent summer temperature. For exact correspondence of measure with weight, corrections are always required whether on the imperial or on the metric system.
CHAPTER XI
SCOTS, IRISH, AND WELSH MEASURES AND
WEIGHTS
1. Scotland
The Scots system was distinctly North German, influenced by English measures.