This section is from the "The Fruit Manual; Containing The Descriptions and synonymes of the fruits and fruit trees commonly met with in the gardens & orchards of Great Britain, with selected lists of those most worthy of cultivation" book, by Robert Hogg. Also available from Amazon: The Fruit Manual
§ Mound or Roundish.
A. Skin smooth. Joke (Hodkinsons's)
Glory of Kingston Perfection (Gregory's)
Green Gage (Horsefield's) C. Skin hairy.
B. Skin downy. Green Rumbullion
Green Willow Hebburn Prolific
§§ Oblong, oval, or obovate.
A. Skin smooth. B. Skin downy.
Favourite (Bates') Jolly Angler (Collier's)
Glory of Ratcliff (Allen's) Laurel (Parkinson's)
Green Gage (Pitmaston) Profit (Prophet's)
Heart of Oak (Massey's) C. Skin hairy
Independent (Briggs') Glenton Green
Jolly Tar (Edwards') Wistaston Hero (Bratherton's)