t 100 3 



wards the centre, not directly, but fo as to form with the cen- 

 tre an angle of about 1 5 degrees. This ice bruifed and warned, 

 melted to a pint and a half of pleafant frefh water. The time 

 and heat were nearly the fame as I defcribed above. 



" Mr. Barrington at this and former periods obferved, that 

 the feparation of the laminae of the ice by bruifing accelerated 

 the effect produced by wafhing; that is, the extrication of the 

 intercepted brine. 



" January the 19th at night, the mercury in the Thermometer 

 funk to twenty-fix. The fea-water, remaining after the foregoing 

 congelations in the flat dim marked A, was frozen fo far, that 

 only a pint remained fluid at the bottom. This ice was in all 

 refpeSs like the former portions. Bruifed, warned, and melted, 

 as on former occafions, it gave a quart of frefh water. At the 

 fame time, the water in B was frozen in the manner before 

 defcribed, but in a larger quantity, and fome lamina; of ice fhot 

 clofe to the glafs as far as the bottom of the vefleL This ice 

 bruifed and warned as formerly, and placed before the fire in a 

 glafs funnel, melted in a heat of a hundred and fixty, in an hour 

 and a half, to one quart of frefh water. 



" January the 20th, the mercury which flood at twenty- feven 

 in the morning, and fell to twenty-fix towards twelve o'clock, 

 fell in a few hours to twenty-four, and, before nine at night, fell 

 to twenty-three. Only a thin coat of ice was formed on the 

 water in A, which I did not difturb, expecting it to freeze deeper 

 -during the night. The water in the veflel B was frozen to fome 

 thicknefs at the furface, and contiguous to the fides of the glafs 

 body, but not at the bottom. Expecting a ftronger congelation, 

 I fuffered this alfo to ftand until the next morning, and confe- 

 quently could not determine the quantity of ice formed in it, 

 otherwife than by feeling near the furface, whereby I prefumed 



. - the 



