PARK AND CEMETERY. 
1 33 
artemesia TRIDENTATA. — From Vick's Magazine 
placed over them during the severe winter. They 
would then be far finer. Selections of hardy kinds 
should commence with the “pompones” and be re- 
cruited from neighboring collections, for plants 
which are called hardy here are tender 50 miles 
northward. There are several fine half-shrubby 
Canary Island and South African species commonly 
calied “marguerites” by the French. C. coronar- 
ium and C. Carinatum in variety are typical of the 
Mediterranean annuals. C. segetum is the British 
yellow Ox-eye.” 
Artemesia is a large genus of 150 or more spec- 
ies, called “wormwood,” southernwood, “sage- 
brush” and many other things. Several are shrubs. 
A. alrotanum being one of the most familiar in 
northern gardens with A. stellerianum a close sec- 
ond. A. arborescens and A. procera are in Euro- 
pean gardens. A. cana, rigida, spinescens, and 
tridentata in varieties are the familiar sage (scented) 
bushes of the northern Rocky mountain regions, 
and A. filifolia, A. Californica, A. Bigelovi, A. 
Bolanderi, A. Rothrockii and some others are those 
of the arid regions of the southwest. 
Trenton, N. J. James Mac P her son. 
The city engineer of the old cathedral town of 
Canterbury, England, is advocating and has been 
adopting a method of making macadam roadways, 
in which each stone is coated with tar before it goes 
into the roadway. 
The stones are prepared for the tar by heating 
them, either in the open, or in an oven or kiln. 
When done in the open, they are spread out on a 
flat bed, some twelve inches thick, and 
covered with three or four inches of coke 
and breeze, with a little wood to aid the 
fire, and in this way a stack of stone 
about five feet high is formed. It is fre- 
quently made conical and closed at the 
top. Then it is fired and allowed to 
burn for seven or more days. As this 
method, however, causes the disintegra- 
tion of many stones, an oven or kiln, 
with its more equable temperature, is 
preferable. 
Tar of good quality should be used 
and heated long enough to assure great 
tenacity. It may be boiled in fifty-gallon 
kettles for three or four hours, and after 
half a bucketfull of pitch is added, boiled 
a little longer. 
The stones, to receive their coating of 
tar, should not be warmer than the palm 
of the hand can bear comfortably. If 
they are used when too hot, the value of the tar 
for building is destroyed, and, if they are not hot 
enough, the tar will be so thick that it will soften in 
hot weather. 
When the stone is of the proper temperature it 
is screened, so as to secure three distinct sizes — one 
to two inches for the bottom layer, one-half to one 
inch for the middle layer, and one- quarter to one- 
half inch for the top layer. The bottom layer is 
from three to four inches thick, and is thoroughly 
rolled with a ten-ton roller, then the second layer 
of half the thickness is laid and thoroughly rolled, 
and a very thin top layer is laid and also thor- 
oughly rolled. A final top dressing of quarter-inch 
and smaller granite screenings is put on, and traffic 
is admitted to work this fine material down into the 
tarred roadbed. 
A road so formed is said to be capable of carry- 
ing the heaviest country traffic and to be good for 
seven years, with an outlay of four cents a square 
yard for repairs, when more extensive repairs may 
be required. The cost for the depth of four and 
one-half inches is for material thirty-six cents per 
square yard, excavating eighteen cents; broken 
brick ballast, twenty cents; labor, eighteen cents; 
rolling, six cents; contingencies, ten cents; a total 
of one dollar and eight cents a square yard. 
The great vine at Hampton Court, England is at last 
beginning to feel the effect of age. It is not, perhaps, 
surprising since it has been flourishing since 1769 and 
has gone on bearing 2,000 bunches or so of Black 
Hamburgs for the last hundred years. This year, in its 
weakened condition, it is only to be permitted to bring 
1,200 bunches to maturity. 
