A quantitative Study of Variation, Natural and Induced, ete 163 
periments, to be mentioned later. Each single injection was recorded 
under a given injection number not only to indicate that such a bud 
had been injected but also to name the chemical employed. 
A physician’s hypodermic syringe was used to fill the ovary sac 
with fluid. Most of the buds were treated while very small, certainly 
before the reduction division had taken place; others only a short 
time before pollination. 
Table ı gives the data for the injections made, listing the plant, 
the injection number, the chemical employed, the strength of the 
chemical, and the age of the bud at the time of treatment. 
Table 1. 
5 . | | 
ee | a | Chemical used Strength of chem. | Age of buds 
number number | | 
250— I 579 ZnSO4 15% No color showing 
” 581 * » % 
” 585 „ ” ” 
” 587 ” | ” ” 
7 596 Ca(NOs3)o Moo % „ 
er 598 a i af 
te 609 en en = 
” 591 Hy Oo = 39 
> 595 ” _ » 
250— 2 610 CuSO, ho % -- 
on 612 cn fh = 
250— 5 615 Cy HC, O + H,O es | 3 
Ss 616 Rn 7 | 
” 617 ” | >: » 
5 620 a 3 = 
in 622 ZuSO, “s 
” 624 ; ” 
250— 6 627 Pr N ” 
iF 628 a a en 
250 — 7 634 Ca(NO3)o ” ” 
” 635 ” ” ” 
” 629 ” ” ” 
” 639 Hy (6) Dr 2 
250— 8 644 ZnSO, 1/4,% Buds small 
’ 649 ” ” ” 
250—10 663 Ca(NOg)o "ho % ” 
4 642 ZnSO, 1/,% Pa 
FF 774 a3 10% Buds very small 
” 778 ” ” ” 
250—1I1 769 ” Us % ” 
