Paris grains in a Paris cube foot of water=645511
English grains in a Paris cube foot of water=529922
Paris grains in an English cube foot of water=533247
English grains in an English cube foot of water=437489.4
English grains in an English cube inch of water=253.175
By an experiment of Picard with the measure and
weight of the Chatelet, the Paris cube foot of
water contains of Paris grains=641326
By one of Du Hamel, made with great care=641376
By Homberg=641666

These show some uncertainty in measures or in weights; but the above computation from Everard's experiment may be relied on, because the comparison of the foot of England with that of France was made by the joint labours of the Royal Society of London and the French Academy of Sciences: It agrees likewise very nearly with the weight assigned by Mr Lavoisier, 70 Paris pounds to the cubical foot of water.

No. IX.

Tables for Converting Ounces, Drams, and Grains, Troy, into Decimals of the Troy Pound of 12 Ounces, and for Converting Decimals of the Pound Troy into Ounces, &c.

I. For Grains.

Grains= Pound.
1.0001736
2.0003472
3.0005208
4.0006944
5.0008681
6.0010417
7.0012153
8.0013889
9.0015625
10.0017361
20.0034722
30.0052083
40.0069444
50.0086806
60.0104167
70.0121528
80.0138889
90.0156250
100.0173611
200.0374222
300.0520833
400.0694444
500.0868055
600.1041666
700.1215277
800.1388888
900.1562499
1000.1736110
2000.3472220
3000.5208330
4000.6944440
5000.8680550
60001.0418660
70001.2152770
80001.3888880
90001.5624990

II. For Drams.

Drams= Pound.
1.0104167
2.0208333
3.0312500
4.0416667
5.0520833
6.0625000
7.0729167
8.0833333