440 Agricultural Experiment Station, Ithaca, N. Y. 



2. The botanical types to which the cultivated dewberries 

 belong are these: 



I. The northern dew^berry, or Ruhus Canadensis. To this type 

 belong the Windom, Lucretia's Sister, and Geer. 



(a) The Lucretia sub-type, or variety roribaccus, com- 



prising the Lucretia. 



(b) The Bartel sub-type, or var. invlsiis. To this belong 



Bartel or Mammoth, General Grant, and Never 

 Fail. 

 II. Southern dewberry, or Ruhus trivialis. Here belong Mana- 

 tee, Bauer, Wilson's White, and Austin, and probably 

 Fairfax. 



III. The western dewberry or Ruhus vitifoUus (known also as 

 R. ursinus). Here belong the varieties known as Aughin- 

 baugh (one of the reputed parents of the Loganberry), 

 Skagit Chief, Belle of Washington, and Washington 

 Climbing. None of these berries have been well tested 

 beyond the Pacific coast region. 



3. The dewberries are distinguished from the blackberries by 

 a true trailing habit, cymose and few-flowered inflorescence, and. 

 the habit of propagating by means of '^ tips." Like the black- 

 berries and raspberries, they bear their fruit upon canes of last 

 year's growth, and these canes die or become weak after they 

 have fruited. They are propagated by means of " tips " and root 

 cuttings. 



4. The peculiar merits of the dewberries as cultivated fruits 

 are earliness, large size and attractive appearance, and the ease 

 with which they may be protected in winter. 



5. The peculiar demerits of the dew^berries are the failure of 

 the flowers to set, the formation of nubbins, and the difiiculty of 

 picking the fruit. There is no positive method known by which 

 the first two difficulties can be overcome, and the causes of them 

 are unknown, but there is reason to believe that tying up the 

 canes, and pruning and thinning will tend to make the plant pro- 

 ductive. The labor and unpleasantness of picking may be 



