National Geographic : 1923 Jan
THE MAGIC C OF SNOW AND DEW 109 x. i'j; . ,fir rr" "[ , .. .4 :.. fir..' ;. % " + *. "h ,/ tom-.' r yam::- 101 vw7 IMAGtS """" " " "" AND WINDOW Theimagein the upper left corner is the unusual "snowflake" design; immediately below it is an example of window ice. In the lower right corner Jack Frost seems to have shaken out his feather bed. The upper right illustration is magnified four diameters; the others, with the exception of the window ice, which is greatly reduced, are natural size.