170 Proceedings of Indiana Academy of Science 
WASHINGS 
VO. LLORES GO 
OTRENGTH 
watts, bring the cost of ozone just about to a level with that of Javelle 
water. There remains only the question of quality. At present, it is 
frequently remarked that home-washed clothes outlast laundry-washed 
clothes often two to one. Part of this is due to the stronger soaps, 
soda, etc., used in the laundry, part to the greater mechanical agitation 
perhaps, and part to bleaching methods. The housewife does not usu- 
ally use a chemical bleach, but gets the natural effect of the sunlight 
and moisture in producing sufficient active oxygen in one form or an- 
other to give a very beautiful bleaching action. If ozone has the prop- 
erty of emulating sunlight bleaching its use would certainly be desirable. 
Heinz & Co. of Berlin are treating newly-woven linen in two re- 
volving drums with ozone to remove the yellowish tinge very success- 
fully. These drums were built by the Aktiengesellschaft to order and 
their successful operation resulted in the application of ozone to laun- 
dry bleaching in several laundries. This is a development of but the 
last two or three years and ozone may well have found a real use in 
this field. 
Deut. Waescherei Ztg. 22, No. 6, pp. 594-595 (1920); 23, No. 9, 
p. 828 (1921); 23, No. 15, p. 587 (1921). 
Purdue University. 
