ets 
100 
Lin 10—* cm? 
Vat 2.74 4.42 
—k anorthite 
ER Lin10 cm? 
1.59 3.11 4.16 6.35 1.95 
water-quartz tel O & enn. 
water-anorthite 6.2 x 106 em. 
while Inmore*) has found in an analogous method (weighing with 
a very delicate balance the increase of weight of a plain surface of 
known size in a moist atmosphere) 
water-brass 0.27 x 10-6 em. 
water-steel 0.61 X 106 em. 
water-niekel 0.99 X 10-6 em. 
water-rock-cristal 0.0 till 6.0 x 106 em. 
water-platina ONT 2, Sho are CEs 
water-Jenaglass 0.3 ,, 4.0 x 106 cm. 
1) Wiedem. Arn. 31, p. 1006—1014. (1887), 
