Mr. Wepewoon’s Method of conneéting, &c. 359: 
"The hope of attaining this defirable and important object 
gave rife to the expertments which I have now the honour of 
communicating. How far I may have fucceeded, or whether 
the means employed were adequate to the end propofed, is, 
with ail deference, fubmitted to this illuftrious Society. 
This attempt is founded upon the conftruction and: applica- 
tion of an intermediate meafure, which takes in both the heats. 
that are meafurable by the mercurial thermometer, and a fuffi- 
cient number of thofe that come within the province of mine: 
to connect the two together; the manner of doing which will 
be apparent from the three firft fgures (tab. XEV.); wherein F’ 
reprefents FAHRENHEIT’s thermometer, with a continuation of 
the fcale; W my thermometer; and M the intermediate mea- 
fure divided into any number of equal parts at pleafure. 
For if the heat of boiling water, or 212 degrees. of Fan- 
RENHEIT, be communicated to M, and its meafure upon Mi’ 
matked, as at a; and if the heat of boiling mercury, or 600° 
of FAHRENHEIT, be alfo communicated to M, and marked: 
as at 4; itis plain, that the number of degrees upon M be- 
tween @ and 4 will be equal to the interval between. 212 and: 
600, that is, to 388° upon FAHRENHEIT. 
In like manner, upon expofing M to two different heats. 
above ignition along with my thermometer pieces, if a certain 
degree of my fcale be found to correfpond with the point d,. 
and another degree of mine with the point c; then. the inter- 
val between thofe two degrees upon mine muft be equal to the: 
interval de; and how many of Fanrenuett’s that interval is 
equivalent to will be known from the preceding comparifon. 
Thus we can find the number of FAHRENHEIT’s degrees con- 
tained in any given extent of mine, and the degree of Fau- 
RENHEIT’s with which a given point of mine coincides > 
whence 

