94 Morey on Mineral Waters, i^c. 



mence on the upper surface and proceed gradually down- 

 wards, as in the sulphate of soda, but began to form round 

 the small pieces of nitre which were thrown in. 



Other particulars might be stated, but as the phenomena 

 are probably familiar to you, I omit them. 



The above experiment is another proof that atmospheric 

 pressure is not essential to the crystalization of salts, nei- 

 ther could the phenomena be ascribed to the sudden ob- 

 struction of a portion of heat from the liquid on the admis- 

 sion of air, as the crystals W'ere not first formed on the 

 surface ; besides, I found in one or two instances, the fluid 

 crystalized throughout, w^hen there was no exposure to the 

 air. 



From the numerous experiments on saline crystalization, 

 made by Dr- Coxe of Philadelphia,* and Professor Ure of 

 the Glasgow Institution, no correct inferences, it appears, 

 can as yet be deduced from the facts. The last gentleman 

 supposes that negative electricity may be the agent employ- 

 ed by nature.f 



Should not the crystals formed in the experiment I have 

 described, be called the Nitro-Sulphate of Potash? 



Art. XV. — On Artificial Mineral Waters, with some re- 

 marks on Artificial Light ; by Samuel Morey, of Or- 

 ford, JS''ew-Ha?npshire. 



to professor sillimax. 



Dear Sir, 



Possibly something for the Aracricriu Jouujial may [)'?■ 

 selected from the following thoughts and experiments, the 

 object of which is to furnish, at a cheap rate, an abundant 

 supply of light for many purposes, and also to raultiplv 

 fountains, such as those of Seltzer, Saratoga, &£c. at such an 

 expense, and in such quantities and situations, that the calls 

 and necessities of every one may be conveniently satisfied. 



* See Annals of Philosophy, Vol. VI. page 101. 

 •I 3ee Journal of Science and ArfS; by Broiide, Vol. V. page i06 



