vi List of Plates. 



XXII. Map of Presque Isle. 



XXIII. Chart showing a Schematic Classification of the Vegetational 

 Formations of Presque Isle. 

 XXn'-LI. Series of Plates Illustrating the Various Vegetational Features 

 of Presque Isle, Erie County, Pennsylvania, and Accom- 

 panying the Botanical Survey of that Locality by Mr. O. 

 E. Jennings. 

 LII. Set of Sheffield Plate, which belonged to William Pitt, Earl of 



Chatham. 

 LIII. Seal, Fob, and Cameo Scarf-ring, which belonged to William 

 Pitt, Earl of Chatham. 

 Leather Wallet carried by General John Forbes on his March 

 to Pittsburgh, 1758. 

 LIV. Certificate of Freedom of Dunfermline, Tobacco Mull, and 

 Commission in Colonel Stewart's Regiment, which 

 belonged to General John Forbes. 

 LV. Inscription on Sides of Powder-horn carved by WiUiam 



McKenzie, 1783, when in Garrison of Fort Pitt. 

 LVI. Old Fire Engine Built by Members of the Harmony Society at 

 Economy, Beaver County, Pa., 1826. 

 LVII. First Court-house in the Diamond Market-place, Pittsburgh, 

 Pa. Built 1794, torn down 1862. Site of "Old City 

 Hall" 1908. 

 LVIII. The Western L^niversity of Pennsylvania, from Oil Painting by 

 Russell Smith, 1833. (Fourth Ave. and Cherry Alley.) 

 LIX. Charles Chauncey Mellor. 



