] 20 Prof. E. D. Smith on the Warin Springs 



be remarked that, during one of the seasons above alluded 

 to, there were continual rains ; but at the time of my visit, 

 there had been an uncommon drought. 



4. The apphcation of the sulphuric and nitric acids to 

 separate portions of the water, produced no effervescence 

 or discoloration. 



5. The oxalic acid produced slowly a white cioud. 



6. The oxalate of ammonia occasioned an instant white 

 cloud. 



7. Nitrate of mercury caused a brownish yellow precip- 

 itate. 



8. Sirup of violets produced no effect. 



9. Turmeric paper was not altered. 



10. Muriate and nitrate of barytes, each occasioned an 

 immediate white precipitate. 



11. Nitrate of silver produced a very slight, whitish cloud, 

 when the water was fresh from the spring ; but after it had 

 stood two hours, the nitrate of silver occasioned a denser 

 cloud instantly, and the precipitate became dark, when ex- 

 posed to the sun. 



12. Prussiate of potash and prussiate of lime produced 

 no discoloration. 



13. Acetate of lead occasioned an immediate white 

 cloud. 



14. Solution of soap in alcohol caused a supernatant white 

 cloud. 



15. Alcohol had no visible effect. 



16. Phosphate of soda caused an immediate white pre- 

 cipitate. 



17. Ammonia occasioned a slight supernatant cloud. 



18. Carbonate of ammonia made no change of appear- 

 ance, until phosphate nf soda was added, when there was 

 an immediate white precipitate. 



19. Neither the infusion nor the tincture of galls produ- 

 ced any effect. 



20. Silver leaf seemed to be slightly darkened. 



21. Fresh made hme water was applied at the fountain, 

 but produced no effect. This experiment was repeated 

 many times, because a general idea was entertained that 

 carbonic acid was contained in the water and that the air 

 bubbles, which were constantly ascending from the bottotn 

 of the spring, were really this gaseous substance. This 



