172 Dr. Hulme's Experiments and Observations 



Exper. 2. Two drams of Glauber's salt and two ounces of 

 water being mixed with herring light, the solution was thereby 

 quickly made very lucent, and remained so till the succeeding 

 evening. 



Exper. 3. Mackerel-light, being mixed with two drams of 

 Rochelle salt or tartarized natron and two ounces of water, 

 caused the fluid to be very luminous. 



Exper. 4. Two drams of soda phosphorata and two ounces 

 of water, mixed with herring-light, formed a very lucent fluids 

 which retained the light for a long time. 



Exper. 5. Herring-light, with one dram of saltpetre or 

 nitrated kali and two ounces of water, made the solution pretty 

 luminous. 



Exper. 6. Half a dram of common salt dissolved in two 

 ounces of water, with the addition of mackerel-light, composed 

 a very shining mixture, which retained its splendour for the space 

 of a day or two. The same effect was produced by herring- 

 light. 



Exper. 7. Two ounces of sea water, being agitated with the 

 light of a mackerel, soon obtained a brilliant illumination. The 

 sea water preserved its luminousness for several days. The ex- ' 

 periment was successfully repeated. 



Exper. 8. Two drams of pure honey, that had not been cla- 

 rified, or exposed to heat, were dissolved in two ounces of water; 

 and, after the admission of some mackerel-light, and shaking the 

 phial, the solution was fully impregnated with light, which was 

 visible the next evening. 



Exper. 9. Two drams of purified or refined sugar being dis- 

 solved in two ounces of water, and mixed with the shining 

 matter of a herring, the fluid acquired a great degree of lucid- 



