Rate of 
Leak | Rate of 
‘No. Material. PEE or Leak 
of Solid | per litre 
or perc.c.| of water. 
of Gas. 
1.| Deposit from Roman pipes, Bath ...................2.02e00- ‘45 — 
2.| Gas bubbling up at King’s Spring, Bath .................. 50 cf 
3. ie 5 @ross) Baths Babli) oe.656-24 bai ecd 3°5 = 
4.| Dissolved gas, King’s Spring, Bath ........ SNR eee = 270 
5. | cae) old Royal Spring, Bath: ....-22..4cc.40. & — 430 | 
Pennie irons Hot well, Clifton. ...2. 0... .0 2c. 00-s-cceccaceeestesen nil. — | 
7. | Dissolved salt, St. Anne’s Well, Brighton.................. “5 46 | 
8. | Chalybeate deposit from sides of this well.................. nil. — | 
9.| Dissolved salt from water, Kelso, N.B............ .......... nil. nil. 
10. | Dissolved salt, water from Red Sandstone, N. Cheshire.) nil. nil 
11.| Fur, Cambridge hot-water pipes ...... aoe a re We ee nil, — 
2) opout, bakewell hot spring ...........-..2-.-cesecaceosccees nil. a 
13.| Black deposit, from Aldfield Spa, Ripon ................ af) ee ne 
14, | Dissolved salt, from ditto .................. Pte ati eN sot Ld 6:0 
15.| Dissolved salt, barium water, Llangammarch Wells, 
CLT HELE S MRA Gp Boer be Oe el 1:8 78 
tie SELLE RR i  Beiaee e S e  ee s nil. aes 
17.| Native platinum ........... ee er eee See nl. | — 
| 
| | 
1 
and, more especially, with that due to the traces of radium 
dissolved in the water. It was found that the activity of the 
dissolved gas extracted by boiling from the freshly collected 
water was very great compared with that due to the dissolved 
| 
radium. The gas bubbling up with the water was not so 
active as that extracted by boiling. If the radioactivity of 
the Bath waters has any connexion with their reputed medi- 
cinal value, the dissolved emanation, not the traces of dissolved 
radium salt, must be the agent principally concerned. 
There are slight differences between the activity of the 
gases collected by boiling or otherwise at the various springs. 
These, however, may well be due to differences of temperature, 
and to differences in the conditions under which the bubbling 
gases are exposed to the dissolving action of the water, near 
the place of collection. 
The quantities of emanation in the water show clearly 
that it must have had access to large quantities of radium. 
Indeed, the radioactivity so frequently associated with 
thermal springs is suggestive of the conclusion that radium 
is a far more abundant constituent of the internal portions 
of the earth than of the external ones. 
6-17. These remaining items do not call for any special 
comment, 
Distinct radioactivity appears to be much commoner in the 
saline residues of wuters than in rocks. 
Terling Place, Witham. 
Oct. 10th, 1904. 
