style of pruning adopted. Vines of suitable form are cultivated,
pruned and the crop gathered easily and cheaply. This depends also
both on the form of vine adopted and on care in details.

It is impossible, therefore, to state for any particular variety or
any particular location the best style of pruning to be adopted. All
that can be done is to give the general characteristics of the variety
and to indicate how these may be modified by grafting, soil or
climatic or other conditions.

The most important characteristic of the variety in making a choice of
a pruning system is whether it normally or usually requires short,
half-long, or long pruning. With this idea, the principal grapes grown
in California, together with all those grown at the Experiment Station
on which data exist, have been divided into five groups in the
following list:

1. _Varieties which require long pruning under all
conditions._--Clairette blanche, Corinth white and black, Seedless
Sultana, Sultanina white (Thompson's Seedless) and rose.

2. _Varieties which usually require long pruning._--Bastardo, Boal de
Madeira, Chardonay, Chauche gris and noir, Colombar, Crabbe's Black
Burgundy, Durif, Gamais, Kleinberger, Luglienga, Marsanne, Marzemino,
Merlot, Meunier, Muscadelle de Bordelais, Nebbiolo, Pagadebito,
Peverella, Pinots, Rieslings, Robin noir, Rulaender, Sauvignon blanc,
Semillon, Serine, Petite Sirah, Slancamenca, Steinschiller, Tinta Cao,
Tinta Madeira, Trousseau, Verdelho, Petit Verdot, Waelcherisling.

3. _Varieties which usually require short pruning._--Aleatico,
Aligote, Aspiran, Bakator, Bouschets, Blaue Elbe, Beba, Bonarda,
Barbarossa, Catarattu, Charbono, Chasselas, Freisa, Frontignan,
Furmint, Grand noir, Grosseblaue, Green Hungarian, Malmsey, Mantuo,
Monica, Mission, Moscatello fino, Mourisco branco, Mourisco preto,
Negro amaro, Palomino, Pedro Zumbon, Perruno, Pizzutello di Roma,
Black Prince, West's White Prolific, Quagliano, Rodites, Rozaki, Tinta
Amarella, Vernaccia bianca, Vernaccia Sarda.

4. _Varieties which require short pruning under all
conditions._--Aramon, Burger, Chardonay, Chauche gris and noir,
Colombar, Crabbe's Black Burgundy, Durif, Black Morocco, Mourastel,
Muscat of Alexander, Napoleon, Picpoule blanc and noir, Flame Tokay,
Ugni blanc, Verdal, Zinfandel.

5. _Varieties of table grapes which usually require half-long or
cordon pruning._--Almeria (Ohanez), Bellino, Bermestia bianca and
violacea, Cipro ne