Show Antilog Device The fogging togging of ot show windows It they are of ot the boxed ln type may be pren prevented b by placing a flat glass Of porcelain dish containing calcium chloride In the window This chemical substance quickly absorbs moisture from the air with tho the result that the tha moisture Is prevented from congealing against the outside glass says saya Iopu Popular tar lar Science Monthly The contents of ot the dishes must Da be renewed every two or three days and the moist calcium chloride thoroughly dried drie-d after atter which It may be used again |