1004 Wisconsin Academy of Sciences, Arts, and Letters. 
EXPLANATION OF PLATE LXV. 
In plate LXV the facts of column IV, p. 991, are shown graphically. 
The numbers at the bottom of the plate give the temperatures of the 
upper and lower surfaces of a column of water having unit area and 
height. Ordinates express the relative thermal resistance to mixture, 
that at 3°-4° and at 5°-4° being taken as unity. 
