White Spanish ditto .5294
Apple tree .7930
Pear tree .6610
Quince tree .7050
Medlar .9440
Plumb tree .7850
Olive wood .9270
Cherry tree .7150
Filbert tree .6000
French box .9120
Dutch ditto 1.3280
Dutch yew .7880
Spanish ditto .8070
Spanish cypress .6440
American cedar .5608
Pomgranate tree 1.3540
Spanish mulberry tree .8970
Lignum vitae 1.3330
Orange tree .7050
_Note_--The numbers in the above Table, if the Decimal point be carried
three figures farther to the right hand, nearly express the absolute
weight of an English cube foot of each substance in averdupois ounces.
See No. VIII. of the Appendix.--E.
No. VIII. ADDITIONAL.
RULES _for Calculating the Absolute Gravity in English Troy Weight of a
Cubic Foot and Inch, English Measure, of any Substance whose Specific
Gravity is known[64]._
In 1696, Mr Everard, balance-maker to the Exchequer, weighed before the
Commissioners of the House of Commons 2145.6 cubical inches, by the
Exchequer standard foot, of distilled water, at the temperature of 55
of Fahrenheit, and found it to weigh 1131 oz. 14 dts. Troy, of the
Exchequer standard. The beam turned with 6 grs. when loaded with 30
pounds in each scale. Hence, supposing the pound averdupois to weigh
7000 grs. Troy, a cubic foot of water weighs 62-1/2 pounds averdupois,
or 1000 ounces averdupois, wanting 106 grains Troy. And hence, if the
320