86     ON THE  EFFECT OF  THE  INTERNAL  FRICTION  OF  FLUIDS
Baily's results with spheres suspended by fine wires.
| | | n By theory

No. and kind

Diameter of sphere

Diameter of wire.

For

For
inertia

Additional for inertia

| 2a | 2&i | buoy- | on | on account
| | | ancy | common | of internal
| | | | theory | friction

H-INCH SPHERES
"No. 1, Platina

1-44

0-01429

1

0-5

0-289

No. 2, Lead | 1-46 | 0-01429 | 1 | 0*5 | 0-285
No. 3, Brass | 1-465 | 0-01429 | 1 | 0-5 | 0-284
No. 4, Ivory | 1-46 | 0-00251 | 1 | 0-5 | 0-285
2-INCH SPHERES | | | | |
No. 5, Lead | 2-06 | 0-01429 | 1 | 0-5 | 0-202
No. 6, Brass | 2-065 | 0-01429 | 1 | 0-5 | 0-202
No. 7, Ivory | 2-06 | 0-01429 | 1 | 0-5 | 0-202
3-INCH SPHERE | | | | |
No. 66, Brass | 3-030 | 0-023 | 1 | 0'5 | 0-137
| n By theory (continued) | |

No.

Correction

Correction for confin-

Total

n
By experiment

Difference

| for wire | ed space | | |
1 | 0-035 | 0-011 | 1-835 | 1-881 | +0-046, or +^y
2 | 0-035 | 0-011 | 1-831 | 1-871 | + 0-040, or + /_0-
3 | 0-035 | 0-011 | 1-830 | 1-834 | + 0-004, or +_T*_f
4 | 0-016 | 0-011 | 1-812 | 1-872 | +0-060, or +$q
5 | 0-012 | 0-032 | 1-746 | 1-738 | -0-008, or -ofe
6 | 0-012 | 0-032 | 1-746 | 1-751 | + 0-005, or +^7,-
7 | 0-012 | 0*032 | 1-746 | 1-755 | + 0-009, or +_rJ-3;
66 | 0-005 | 0-101 | 1-743 | 1-748 | +0-005, or +3^
with cylindrical rods. The result obtained with the brass sphere No. 3 happens to agree almost exactly with theory. However, as the results obtained with this sphere exhibited some anomalies, it seems best to exclude it from consideration. The value of n, then, which belongs to a 1|- inch sphere, appears to exceed by a minute quantity the value deduced from theory. The difference is indeed so small that it might well be attributed to errors of observation, were it not that all the spheres tell the same tale. Thus the error + 0*046 in the case of the platina sphere corresponds to an