[ 9« ] 



then drained, and then wafhed in diftiiled water, tailed like 

 the ice of frefh water; and being placed in a glafs funnel before 

 a culinary fire, fo that the water might drain off as foon as 

 formed, it diflblved in half an hour, and not in lefs time, al- 

 though the Thermometer placed at the fame diftance clofe to 

 the funnel rofe to 1 60 ; and the fide of the funnel next to the 

 fire was hot to the like degree, as nearly as could be afcertained 

 by the touch. The water of the ice thus melted was frefh and 

 palatable, and meafured half a pint. 



" From the 9th of January to the nth inclufive, the mercury 

 rofe fome days to forty, and during three or four hours on 

 other days it funk and remained at thirty, and fometimes for 

 an hour or lefs it funk to twenty-nine. But it did not remain 

 at thirty during any of thefe days for more than four or five 

 hours, unlefs at the hours of reft, when no obfervation was 

 made. During this period, a thin coat of ice, like the former, 

 was produced on the water in the mallow veflel A ; but no 

 ice was formed in the veflel B. 



" January 12, the Thermometer pointed for feveral hours 

 between thirty-one at the higheft, and twenty-nine at the lowefL 

 A thick cruft of ice, of the texture before defcribed, was formed 

 in the veflel A. This ice broken, warned, and diflblved, became 

 frefh water, meafuring a pint or more. This quantity of ice, 

 placed in a funnel before a fire, in the circumftances already de- 

 fcribed, was not all diffolved in an hour and ten minutes. No ice 

 was formed in the veflel B u . 



11 <c The foregoing- obfervations were committed to writing on the 

 days when they were refpedtively made, but the day or the month was 

 not then accurately noted. It may therefore be found that I have placed 

 fome of the foregoing temperatures a day before, or after that on which 

 they were obferved.' 5 



" January 



