manner as before, but my plants were unhealthy, so I will give, in a condensed
form, the results of Mr. Scott's experiments. For fuller particulars with
respect to this and the five following species, the paper lately referred to may
be consulted. In each case the fertility of the two legitimate unions, taken
together, is compared with that of the two illegitimate unions together, by the
same two standards as before, namely, by the proportional number of flowers
which produced good capsules, and by the average number of seeds per capsule.
The fertility of the legitimate unions is always taken at 100.

By the first standard, the fertility of the two legitimate unions of the
auricula is to that of the two illegitimate unions as 100 to 80; and by the
second standard as 100 to 15.

Primula Sikkimensis.

According to Mr. Scott, the pistil of the long-styled form is fully four times
as long as that of the short-styled, but their stigmas are nearly alike in shape
and roughness. The stamens do not differ so much in relative length as the
pistils. The pollen-grains differ in a marked manner in the two forms; "those of
the long-styled plants are sharply triquetrous, smaller, and more transparent
than those of the short-styled, which are of a bluntly triangular form." The
fertility of the two legitimate unions to that of the two illegitimate unions is
by the first standard as 100 to 95, and by the second standard as 100 to 31.

Primula cortusoides.

The pistil of the long-styled form is about thrice as long as that of the short-
styled, the stigma being double as long and covered with much longer papillae.
The pollen-grains of the short-styled form are, as usual, "larger, less
transparent, and more bluntly triangular than those from the long-styled