198 SYSTEMATIC POMOLOGY 



form of the stone, whether they are round, 

 egg-shaped, or long oval. To carry the clas- 

 sification still further the cherry harvest was 

 divided into six weeks, and the several varie- 

 ties were distributed into these six periods. 



It will be remarked that this classification 

 has a very arbitrary air, a quality which it 

 shares with the preceding classification. Ap- 

 pearances are somewhat deceitful in this case, 

 however; for the types pointed out, even thus 

 vaguely, are natural types; and it is simply 

 the failure of the author, Truchsess or Lucas, 

 to characterize them broadly enough. The 

 latter part of the Truchsess-Lucas classifica- 

 tion is palpably artificial, of course. 



The two classifications best known in this 

 country are the one prepared by Professors 

 L. H. Bailey and G. Harold Powell, and the 

 one of John J. Thomas. The former was 

 first presented in Cornell Experiment Station 

 Bulletin 98, and has more recently been re- 

 published in the "Cyclopedia of American 

 Horticulture," i : 291. It runs as follows : 



I. Sweet cherries Prunus avium. 



i. MAZZARDS; inferior seedlings; fruit of various 

 shapes and colors; common along roadsides. 

 In the Middle Atlantic States the wild Maz- 



