260 DR. BENCE JONES ON THE VARIATIONS OF THE SULPHATES IN THE URINE. 
2nd. Exercise does not cause a very marked increase in the sulphates. 
3rd. Sulphuric acid when taken in large quantity increases the sulphates in the 
urine. In small quantity, even when long continued, no effect is manifest. 
4th. Sulphur when taken does increase the sulphates in the urine. 
.5th. Sulphate of potash and sulphate of magnesia produce the most marked 
increase of the sulphates in the urine. 
