DISCUSSION OF ANALYSES. 77 



I have compared the analysis you send with that of Wallawhatoola alum water, 

 and am satisfied that by some error or mistake you have gotten an entirely different 

 water. * * * If he [the agent] from whom the water was purchased bought 

 the water through some other agent, there is one possible explanation that occurs to 

 me. Sometimes during the summer empty Wallawhatoola water bottles have "been 

 used to send for water from a sulphur spring in the neighborhood, and I have reason 

 to believe that some of these bottles of sulphur water have been mixed with the 

 Wallawhatoola water; it is possible that thus you have gotten some of this sulphur 

 water. 



JEFFRESS LITHIA WATER (No. 871 I. & W.). 



The composition of this water as found by the Bureau of Chemistry 

 does not differ materially from the advertised analysis. It is, how- 

 ever, a misnomer to call this a lithia water. 



GENEVA LITHIA WATER (No. 872 I. & W.). 



The advertised analysis of this water differs very materially from 

 the Bureau of Chemistry results, especially in the potassium and 

 lithium figures. Although the water is advertised as containing a 

 very large amount of lithium, 23.8 parts per million, it in reality con- 

 tains only 0.1 part. It can therefore hardly be considered as a lithia 

 water, as it would take about 300 liters of this water to give one full 

 medicinal dose of lithium. A sample of this water obtained directly 

 from the spring also showed the same very minute amount of lithium. 



The company's answer to the circular letter of the Bureau of Chem- 

 istry was a visit from one of their representatives, who assured us 

 that the analysis advertised by this company was offered in perfectly 

 good faith' and that they would at once have another analysis made, as 

 they could hardly believe that the Bureau of Chemistry results were 

 correct. As no further report has been made by the company, the 

 above statement is published. 



OTTERBURN LITHIA WATER (No. 873 I. & W.). 



The composition of this water as determined by the Bureau of 

 Chemistry does not differ materially from the advertised analysis. 

 However, it is a misnomer to call it a lithia water, as it would take 

 approximately 1,000 liters to give a full medicinal dose of lithium. 



POWHATAN WATER (No. 874 I. & W.). 



The retailer of this water was unable to furnish an advertised analysis. 

 BUFFALO LITHIA WATER (No. 900 I. & W.). 



The advertised analysis of this water differs materially from the 

 Bureau of Chemistry examination in nearly every determination, but 

 especially in the potassium and lithium figures. In view of the expla- 

 nation given below it is evidently possible that this may have been a 



