Six-paned upper and lower sashes on both the first and second floors were, perhaps, more common on houses of moderate size and some large mansions throughout the Colonial period than any other window arrangement. Notable instances are The Highlands; Upsala; Vernon; Wynnestay in Wynnefield, West Philadelphia; Carlton in Germantown; the Powell house, Number 244 South Third Street; the Evans house, Number 322 De Lancy Street; and the Wistar house, Fourth and Locust streets. Among the more pretentious countryseats and city residences having twelve-paned upper and lower sashes on both the first and second stories may be mentioned Cliveden, Stenton, Loudoun, Woodford, Whitby Hall, the Morris house, the Perot-Morris house, Chalkley Hall and Port Royal House in Frankford. Twelve-paned sashes were also used in various ways in combination with six, eight and nine paned sashes. For example, the Waln house, Number 254 South Second Street, has twelve-paned upper and lower sashes on the first story with six-paned upper and lower sashes on the second story, whereas Mount Pleasant has the reverse arrangement. Laurel Hill, in the Northern Liberties, Fairmount Park, has twelve-paned upper and lower sashes on the first story and eight-paned upper and lower sashes on the second story, whereas the Billmeyer house has all twelve-paned sashes except the lower ones on the second story, which are eight-paned. Wyck, consisting as it does of two buildings joined together, probably has the most heterogeneous fenestration of any house in Philadelphia. On the first floor are windows having nine-paned lower and six-paned upper sashes, while on the second story are windows having twelve-paned lower and eight-paned upper sashes and others having six-paned upper and lower sashes. The Free Quakers' Meeting House at Fifth and Arch streets has twelve-paned upper and lower sashes on the first story and eight-paned upper and twelve-paned lower sashes on the second floor. [Illustration: PLATE LXII.--Chimney Piece and Paneled Wall, Parlor, Whitby Hall.] [Illustration: PLATE LXIII.--Chimney Piece, Parlor, Mount Pleasant; Chimney Piece, Parlor, Cliveden.]