1002 Wisconsin Academy of Sciences, Arts, and Letters. 
EXPLANATION OP PLATE LXIV. 
Plate LXIV, from Groll, ’05, represents the change of density in 
water due to rise of temperature and gives in graphic form the facts 
of column III, p. 991. The degrees are given at the bottom of the plate 
and the loss of weight, in grams per liter for each rise of 1, is platted 
on the vertical scale. The ordinates show the difference in weight be¬ 
tween a liter of water at any given temperature and at 4°. 
