356 APPENDIX. 
great QLiantities along the Stream, and is 
called Ice-MeerSj which if the Froft conti- 
nues, harden into one folid Surface when the 
River is frozen over. 
z, Jan. 50, 1730. The Spirit in the Ther- 
mometer which hung in the open Air, be- 
ing at feven a Clock in the Morning twelve 
Degrees below the freezing Point, and there 
having fallen in the Night near an Inch 
depth of Snow, I went to the Thames^ and 
found, in a Bay at the watering Place at 
Teddmgtorii where there was very little Stream, 
the Surface of the Water frozen ‘ about ;^th 
of an Inch thick, under which Ice, I faw at 
the Bottom another Bed of Ice ; then break- 
ing away fome of the upper Ice with a Pad- 
dle, I took up fome of the lower Ice, 
which was about half Inch thick , but 
was not fo folid as the Surface Ice, but 
more fpongy and cavernous. This lower Ice 
joined to the upper Ice at the brink of the 
Water, and was gradually more and more 
diftant from it, as the Bottom deepened ; for 
it adhered clofe to the Bottom, where the 
Stones and Sand were incorporated into it, 
and which it brings up to the Surface along 
with it, when it is frozen to fiicli a Degree, 
as 
