394 Report of the Hoeticulturist of the 



nient is based upon the records for a series of years of the bloom- 

 ing season of the varieties in the Station vineyards. A large part 

 of these records for the varieties named below were published in 

 Bulletin 157. In making the following lists the records for 1899 

 are also taken under consideration, and accordingly they do not 

 exactly correspond with those which were published in the popular 

 edition of Bulletin 157. The lists are arranged to show in parallel 

 columns the strongly self-fertile kinds on the one hand, and on 

 the other the imperfectly self-fertile and the self-sterile kinds. 

 In all tests which have been made as to their self-fertility, when 

 the vines were in normal condition, the former have on the average 

 given marketable clusters, while the latter have given on the 

 average either imperfectly filled clusters or none. 



In grouping the varieties so as to show their relative blooming 

 season they have been classed as " very early," " medium early," 

 " mid-season," " medium late," " late " and " very late." These 

 lists do not show the relative season of ripening.^^ There is no 

 marked line of separation between the groups below. Many of 

 the varieties extend their period of blooming into the period of 

 the next later group, so that it is not always necessary, in arrang- 

 ing the varieties for planting, to follow the classification rigidly. 



Table IV. — Grapes Classified According to their Blooming Season. 



[This table shows in parallel columns lists of grapes which bloom at ap- 

 proximately the same time. The names of strongly self-fertile kinds appear 

 on the left, and those of imperfectly self-fertile and self-sterile kinds, on the 

 right.] 



STRONGLY SELF-FERTILE. SELF-STERILE AND IMPEBFECTLT 



SELF-FERTILE. 

 BLOOM VERY EARLY. 



Clinton. Clevener. 



Janesville. Marion. 



Mary Favorite. 



14 After Bulletin 157 was issued, several inquiries came to the Station, which 

 showed that some readers supposed that the lists therein given to show the 

 season of blooming, also indicated the relative time of ripening, but such is 

 not the case. Some of the very earliest in blooming, as, for example, the Clin- 

 ton, are late in ripening. 



