106 MR. J. SCOTT ON THE FUNCTIONS AND STRUCTURE OF THE 
the long-styled form! These remarkable relative transpositions 
in the structure of the sexual organs are, as I will almost imme- 
diately show, connected with equally remarkable changes in the 
funetions of reproduction. This will be seen by consulting the 
following table, comprising the results of nine distinct unions 
between the three sexual forms. 
Taste VIL—The Three Sexual Forms of Primula veris. 
E weils [ila Ia sie 
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= {98s E ws | Tation. 
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Red Cowslip, non-dimorphie form, 21 | | 
flowers self-fertilized ......... 35d «. | 16 | 13 1447 | 34 | 50 [1719 
Red Cowslip, non-dimorphie form, by | 
pollen of long-styled Cowslip ......... $|3| 2/|15, 7 | 50| 87% 
Red Cowslip, non-dimorphie form, by | | | 
pollen of short-styled Cowslip......... 41 8| 3/27) 9 | 50 450 
Long-styled Cowslip by pollen of non- i | 
dimorphic Red Cowslip ............... Bv res | 5 | 50 | 275 
Short-styled Cowslip by pollen of non- | | | 
dimorphic Red Cowslip ............... 5| 4| 4|16| 4 |50 200 
Long - styled Cowslip, homomorphic | | 
DUE io DA eb Piu 10| 6, 5,83 16 | 50 | 830 
Long-styled Cowslip, heteromorphic | 
umon a MM M DRE 10 | 9| 7 196 | 28 | 50 |1400 
Short - styled Cowslip, homomorphic | | 
Ee Mcd eee Gast 7| 5| 5|58| 11 | 50 580) 
Short - styled Cowslip, heteromorphic | | 
PENES a ERBE EL, 7| 7| 7145 | 20 | 50 |1035 
In the first line of the above table the results are given of 
twenty-one flowers naturally fertilized of the equally-stamened 
and -styled Cowslip ; the second to fifth, inclusive, give the results 
of the reciprocal crosses of the preceding form with the long- and 
short-styled forms. I have also added, for the sake of compari- 
son, the results of the homomorphie and heteromorphic unions of 
the latter forms of P. veris. If we examine the results given in 
the fifth column of the table (in which the average of seeds per 
capsule is shown), we shall see that the highest grade of fertility 
results from the self-wnion of the form with stamens and styles of 
an equal length ; thus, relatively to the most highly fertile of the 
other unions given in the table, viz. the long-styled heteromor- 
phie union, we see that the average excess in favour of the 
former is thirty-four to twenty-eight seeds per capsule, or as five 
