To reduce their apparent height, three-story houses were foreshortened with square windows. Two-piece sashes were used, and the number of panes differed considerably. While a like number in both upper and lower sashes was the rule, the Blackwell house, Number 224 Pine Street, and the Powel house, Number 244 South Third Street, are notable instances of foreshortened windows having three-paned upper and six-paned lower sashes. The Wharton house, Number 336 Spruce Street, and the Evans house, Number 322 De Lancy Street, have foreshortened windows with six-paned upper and lower sashes. The Waln house, Number 254 South Second Street, the Stocker house, Number 404 South Front Street, and Pen Rhyn in Bensalem Township, Bucks County, have foreshortened windows with three-paned upper and lower sashes. Such foreshortened windows as all the above were usually employed with six-and nine-paned sashes on the stories below. Where eight-and twelve-paned sashes were used for the principal windows of the house, the foreshortened windows of the third story usually had eight-paned upper and lower sashes, as on the Morris house, the Wistar house at Fourth and Locust streets, Whitby Hall and Chalkley Hall in Frankford. Most Philadelphia houses, whether gable or hip-roofed, have dormers to light the attic. Two or three on a side were the rule, although a few small houses have only one. For the most part they were pedimental or gable-roofed. Segmental topped dormers were rare, although a row of them is to be seen in Camac Street, "the street of little clubs", and occasional individual instances are to be found elsewhere. Lean-to or shed-roof dormers never found favor, the only notable instances about Philadelphia being at Glen Fern, Cedar Grove in Harrowgate, Northern Liberties, and Greame Park in Horsham, Montgomery County. An accompanying illustration of a dormer on the Witherill house, Number 130 North Front Street, shows the simplest type of gable-roof dormer with square-headed window and six-paned upper and lower sashes. Similar dormers, differing chiefly in the detail of the moldings employed, are features of the Morris house; Wistar house, Fourth and Locust streets; Wynnestay, Wynnefield, West Philadelphia; Wyck; the Johnson house; Carlton, Germantown; and Chalkley Hall, Frankford. Grumblethorpe and Bartram House have dormers of this sort with a segmental topped upper window sash. Solitude has this sort of dormer with three-paned upper and six-paned lower sashes, while Stenton and the Evans house, Number 322 De Lancy Street, have eight-paned upper and lower sashes.