THE HISTORY OF THE CLASSIFICATION OF APPLES. 457 



APPENDIX 



THE DIEL-LUCAS SYSTEM AS REVISED BY DR. ENGELBRECHT. 



Class I. Calvilles. 



Fruit mostly middle-sized, about 60 to 80 mm. broad. Ribs run over the 

 fruit from eye to stem. Skin mostly smooth, often greasy, never russet. Dots 

 but slightly conspicuous. Core large. Cells mostly large and open, always 

 clearly abaxile. Flesh fine or moderately fine in grain, spongy or loose, very 

 juicy. Flavour marked, often good, according to Diel balsamic, spiced, juicy 

 and sweet, sometimes a little sour. 



ORDER I. Pale Calvilles. 



1. Fruit much broader than high, round or conical flattened; greatest 

 diameter at the centre of the fruit ; halves nearly equal. 



Example : ' Lord Grosvenor.' 



2. Fruit much broader than high, widest at the base. 



Example : ' Calville Blanche d'Hiver.' 



3. Fruit not, or but little, broader than high, flattened oval, egg, or barrel- 

 shaped. 



Example : ' Calville St. Sauveur.' 



ORDER II. Striped Calvilles. 



The sunny side is generally lightly or markedly striped with red, other 

 characters as Order I. 



1. Fruit much broader than high, flat-round. 



Example : ' Striped Winter Calville.' 



2. Fruit markedly broader than high, flat-round or egg-shaped, equally 

 rounded at eye and stem. 



Example : ' Gravenstein.' 



3. Fruit somewhat broader than high, somewhat egg-shaped, markedly 

 tapering to stem. 



Example : ' Calville Aromatique.' 



4. Fruit about as broad as high, mostly broader at the base, conical or egg- 

 shaped. 



Example : ' Cornish Gilliflower.' 



ORDER III, Red Calvilles. 



The skin is red, especially on the sunny side, not striped or but faintly. 



1. Fruit round, widest at the centre. 



Example : ' Schwarzrother Winter Calville.' 



2. Fruit markedly broader than high, round or round-conical, generally 

 broadest at the base. 



A. Tube conical or not clearly funnel-shaped. 



Example : ' Calville Rouge d'Automne,' 



B. Tube funnel-shaped. 



Example : ' Calville Rouge d'Hiver.' 



3. Breadth and height about equal, markedly broadest at the base, conical 

 or egg-shaped. 



Example : ' Aesopus Spitzenberg.' 



Class II. Schlotter Apples. 



Fruits middle-sized or large, about 60 to 80 mm. broad or a little broader. 

 Ribs extend over the fruit, often shallow and unequal. Halves often unequal. 

 Skin smooth, scarcely ever greasy. Core large. Cells large, a little oval, often 

 split, opening wide, markedly abaxile. Seeds rattling. Flesh coarse and loose, 

 without aroma. 



ORDER I. Pale Schlotter Apples. 



1. Fruit markedly broader than high. 



Examples: 'Keswick Codlin,' ' Lord Sumeld.' 



2. Fruit higher than broad. 



Examples : ' Mancks Codlin/ ' Golden Spire.' 



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