BUD VARIATION IN THE EUREKA LEMON. 
63 
injury occasioned by the freeze in January of that year. In February, 
1914, and again in February, 1917, unavoidable conditions delayed 
the work so that no pickings were made for about 45 days. 
Table IX. — Dates on which fruit was picked from the lemon trees of the Eureka variety 
in the investigational performance-record plat from July, 1911, to June, 1917, inclusive. 
Month. 
July 
August 
September.. 
October 
November . . 
December. . . 
January 
February. .. 
March 
April 
May 
June 
First and last date of each picking period. 
1911-12 
July 5 to 12. . 
Aug. 1 to 7... 
Aug. 28 to 
Sept. 5. 
Oct. 2 to 10... 
Nov. 3 to 10.. 
Dec. 4 to 11.. 
Jan. 3 to 6.... 
Feb. 1 to 7.... 
Mar. 2 to 15... 
Apr. 1 to 3... 
May 3 to 6... 
May 30 to 
June 1. 
July land 2. . 
Aug. 1 to 3... 
Aug. 26 to 27. 
Oct. 1 to 9.. 
Nov. 1 to 6. . 
Dec. 2 to 6.. 
Jan. 2 to 13.. 
Feb. 2 to 18. 
Nov. 5 and 
Dec. 15 
Jan. 23 
Mar. 10 to 11. 
Apr. 4 to 7 . . . 
May 20 to 22. . 
June 13 to 16. 
July 9 to 14.. 
Aug. 5 and 6 . 
Sept. 8 to 10.. 
Oct. 9 to 13.. 
Nov. 7 to 17.. 
Dec. 14 to 21. 
Jan. 1 to 6 
Feb. 12 to 19. 
Mar. 8 to 12... 
Apr. 6 to 12.. 
May 14 to 19. . 
June 18 to 21. 
1915-16 
July 21 to 23 . 
Aug. 27 to 31. 
Sept. 23 to 27. 
Oct. 25 to 28.. 
Nov. 23 to 27. 
Dec. 20 to 28. 
Jan. 26 to Feb. 
1. 
Feb. 25 to Mar. 
3 - 
Mar. 23 to 27.. 
Apr. 25 to 
Mav2. 
May 25 to 31.. 
June 27 to 30. 
1916-17 
Aug. 1 and 2. 
Sept. 4 and 5. 
Oct. 3 and 4. 
Oct. 27 to 30. 
Nov. 28 and 29 
Jan. 2 and 5. . 
Jan. 31 and 
Feb. 1. 
Mar. 16 to 20 
Apr. 17 to 19. 
May 26 to 29. 
June 30 to 
July 2. 
The excessive number of fruits of the Cull grade recorded in Jan- 
uary and February, 1913, was largely the result of injury by the 
January freeze. All the small fruit on the trees at that time was 
badly frozen, so that there was nothing to be picked for several months 
afterward, and all the frozen fruit was recorded as of the Cull grade. 
Variable fruits were first recorded in September, 1912. Because 
of the interruption to the records occasioned by the freeze of the 
following January and the subsequent period during which no fruit 
was picked from these trees, the data presented for the variable 
fruits are confined to the three years from July, 1914, to June, 1917, 
inclusive. In counting the variable fruits found on the different 
trees the typical fruit for the variety is made the standard, and all 
variations from it are recorded. This practice has been followed with 
all the trees, even those of the Pear-Shape strain. 
In explanation of the relatively large number of variable fruits 
recorded from many of the trees, even of the Eureka strain, it should 
be said that several of the forms listed vary but slightly from the 
typical fruit of the variety. In fact, it is believed that some of these 
forms are continuous variations of fluctuations induced to some extent 
by certain climatic conditions, and they are characteristic to a 
greater or less degree of all lemon trees, so far as studied. Three such 
forms have been designated as collared, protruding blossom end, and 
ridged. On nearly all the trees under observation from 75 to 90 per 
cent of the fruits recorded as variable have been of these classes. The 
more marked variations which show a greater departure from the 
type of the different varieties, and those forms which have been 
