best in the arid mountains of the
West. Perfectly hardy and thrifty with beautiful bluish-green foliage in
Connecticut.

(12) Himalayan white pine (_Pinus excelsa_). One of the nut pines and
with remarkably handsome foliage.

(13) A group of Chinese pistache nut trees (_Pistacia sinensis_). At
Merribrooke it has the habit of frequently growing twice in one year and
sometimes three times in one year. The shoots will grow a foot or more
and then make resting buts early in July. After about ten days of
resting the buds burst, new shoots grow again and rest for the second
time in the early part of September. If we have a warm moist fall the
buds burst for the third time and make a third growth. This third growth
winter-kills without injury to the tree, however. The significance of
the growth presumably relates to the tree being an inhabitant of an arid
country, where it has adapted itself to the rainfall of that country. I
do not know if the trunk adds a new ring of wood after each resting
period, but it likely enough does so.

(14) Moneymaker pecan. Perfectly hardy and thrifty. It has not borne as
yet and there may be a question of the season being long enough for
ripening the nut. At the left a Stuart pecan, that comes from the very
borders of the Gulf of Mexico. Sometimes the smaller branches
winter-kill badly and at other times they do not. It is remarkable that
a tree from the shores of the Gulf of Mexico should live here at all in
the winter.

(15) A field of six-year-old trees. Most of them the result of placing
bitternut hickory pollen on staminate butternut flowers. The trees have
not borne as yet and we can not tell if they are true hybrids or
parthenogens. Parthenogenesis occurs readily with many nut trees. Pollen
of an allied species which does not fuse with the female cell to make a
gamete may, nevertheless, excite a female cell into division and the
development of a tree. Such a tree would be expected to show intensified
characteristics belonging to the parent. This lot of trees notable for
the fact that some are very small for their age and some very large.

(16) A group of Japanese chestnuts. They blight and die and blight and
live and are not given much attention as they are of little value
anyway. The chestnut blight (_Endothia parasitica_) attacks the Japanese
chestnut about as freely as it does the American chestnut. The trees do
not die from it quite so quickly and may bear for some years before