[ r 48 ] 
XVIII. An Account of the State of the Iher- 
mometer at the Hague on the qth of Ja- 
nuary 1757. Ext ratted from a Letter of 
Mr. Abraham Trerfibley, F.R.S. to Tho. 
Birch, D. D. Secret. R. S. 
Hague, Febr. 15. 1757. 
Read Mar. 3, *y Carefully oblerved the thermometer 
I/57 ' JL during the cold days, which we have 
had this winter. I made ufe of the fame thermo- 
meter, with which I made my obfervations in 1740, 
and for that purpofe fixed it in the fame place, where 
it was that year, viz. in a window diredtly expofed 
to the north, and open to a large fquare. In 1 740 
I faw Fahrenheit’s thermometer at two degrees be- 
low o. This year, on the 9th day of January in 
the morning, it was at three degrees above o 3 that 
is, only five degrees higher than in 1740. 
• • T 
XIX. Experimental Examination of Platina* 
By William Lewis, M. B. F. R. S . 
PAPER V. 
Read Mar. 17, f g \ H E account of this extraordinary 
J_ mineral, formerly read to this il- 
luftrious Society, and honoured with their approba- 
tion, being fince publiflied in the F hilojophical Franf- 
attionSy. 
