482 WOODY PLANTS OF MASSACHUSETTS. 
hardy to flourish here, and have sufficient claims as ornamental 
trees to invite the attempt to cultivate them. 
Dr. Harris describes two kinds of insects whose attacks are 
very pernicious to the maples. The first is the beautiful Clytus, 
(Report, p. 84~-5,) a beetle about an inch in length, of a black 
sround color, ornamented with bands and spots of yellow. It 
lays its eggs on the trunk of the Sugar Maple in July and Au- 
gust. The grubs burrow in the bark as soon as hatched, and 
are there protected during the winter. ‘In the spring, they 
penetrate deeper, and form, in the course of the summer, long 
and winding galleries in the wood, up and down the trunk. In 
order to check their devastations, they should be sought for in 
the spring, when they will readily be detected by the saw-dust 
that they cast out of their burrows; and, by a judicious use of 
a knife and stiff wire, they may be cut out or destroyed before 
they have gone deeply into the wood.” 
The other, less injurious, is the caterpillar of the Apatéla 
Americana, (Report, p. 317,) one of the owlet moths. It feeds 
on the leaves of the several kinds of maple, as well as on those 
of the elm and chestnut. 
The maples may be propagated by seeds, and in some in- 
stances by layers, by cuttings of the roots, and by grafting. 
Must of those of our own country have been successfully en- 
crafted upon the sycamore of Europe. The seeds of most spe- 
cies ripen early; those of the Red Maple aid the White, carly 
in summer, of the others, not later than October. They may be 
gathered when the keys begin to turn brown; and sown in 
autumn, soon after gathering, or in the succeeding spring. The 
latter is preferable where moles or mice abuund. The seeds 
should be covered with not more than a quarter or half an inch 
of soil, but the surface should be protected by leaves, straw, or 
some other light substance. They will come up in five or six 
weeks, For keeping through the winter, the seeds should be 
mixed with sand or earth and kept moderately dry. If kept 
perfectly dry and without earth, they are apt to loso their power 
of vegetation. The young plants are ready to be transplanted 
at a year’s growth, and do better if moved then than afterwards. 
