166 On the Species of the Genus Primula in Essex. 
On May 2nd I marked nineteen plants of Cowslip growing 
on a bank at Chignal, and at the end of June I gathered and 
counted the seeds. The results are stated in Tables X. and 
XI., and are certainly rather unsatisfactory ; but I give them 
for what they are worth. Unfortunately, as in the last case, 
I neglected to record the number of flowers which produced 
no seed. Had I done so it would have altered the results 
of this species and the last. With the Cowslip, indeed, I 
know that most of them were on the side of the 1. As with 
the last, this table shows that the individual capsules of the 
s. produce, on an average, more seeds than those of the 1., 
but that the 1. produce most capsules. However, I do not 
consider that these two latter experiments are satisfactory, 
as the plants in the first case were all small and late, and 
therefore not likely to give reliable results ; and in the second 
they grew in a very unfavourable situation, namely, the 
bottom of a hedge, where the surrounding grass and bushes 
no doubt partly choked and smothered them. I could see by 
the number of undeveloped ovules that the flowers had not been 
fully fertilized in either form; so that I believe the plants 
had not produced half the seed they should have done, and 
that which they had produced was, much of it, very small. I 
shall have a few words to say on this subject later. The four 
highest numbers for the s. are 57, 60, 61, and 67; and the 
four highest numbers for the 1. are 61, 62, 65, and 69; while 
the four lowest numbers for the s. are 6, 8, 8, and 8; and 
the four lowest numbers for the 1. are 1, 2, 2, and 2. 
Supp)lementary Remarks on Primula farinosa, Sc. 
P. farinosa. — On September 4th last, after most of the 
capsules of this plant had shed their seed, I obtained speci¬ 
mens with unburst capsules from a moist spot on the Alp 
Nova, just above St. Moritz. 
In Table XII. and the following tables I have taken an ac¬ 
count of each flower that seemed as if it had ever opened fully 
—no matter whether it had produced seeds or not. As each 
plant rarely produces more than one umbel (I do not think 
that, on an average, more than 1 in 50 does so, and out of 
the 42 plants above referred to only 1 had two umbels and 
they small ones) the average number and weight of seeds 
