break up the roads. I have been asked 
some questions by the members, upon the 
cost of calcium chloride for road improve- 
ment. I think you will not find it prohibi- 
tive when one considers that the necessity 
of removing weeds and adding much new 
road material for repairs is gotten rid of, 
the consequent labor being materially less- 
ened. After the treatment there is a beau- 
tiful road that is dustless, clean and odor- 
less and has a color that harmonizes with 
the shrubbery and other effects of the cem- 
etery. It makes a road that is excellent 
for horses and automobiles and a pleasant 
walk for the pedestrian. Calcium chloride 
is the only material that does not affect 
rubber, so that the automobile people are 
well satisfied with its use, although the tire 
man might be of the opposite opinion. 
Mr. Crain has brought out a point of 
importance, and that is that steep or hill 
roads that have been treated with calcium 
chloride are not inclined to wash, as it 
binds the road material thoroughly, elimi- 
nating this trouble; nor do roads treated 
with calcium chloride ravel quickly, but 
they must be followed up and treatments 
made frequently enough to prevent a large 
amount of wear and a large accumulation 
of dust. Subsequent treatments should be 
made when the first sign of dust begins to 
show. 
Mr. Mullen : We have used it for two 
years, and we find that it saves a lot of 
labor around the cemetery in the spring. 
I noticed after the first year, as the water 
washes down, that calcium chloride will 
prohibit the weeds from coming up and it 
adds a certain hardness to the roadbed. 
Replanting Peonies. 
When is the best time to replant peonies 
to get bloom ? 
W. P. Click ; The best time to replant 
peonies to get a succession of bloom with- 
out stopping the blooming season is to di- 
vide and replant in the fall, but care should 
be taken not to make your divisions too 
small. There is where the great trouble is 
with replanting peonies. If you divide them 
too much, the next year they are bad and 
there is no bloom ; unless the earth is very 
good you won’t get much bloom the sec- 
ond year, but you take, for instance, a 
peony with fifteen or twenty eyes on it, 
when you take it up, if you will divide it 
with about six eyes to each division, you 
will get a succession of bloom the next 
year and you will never know it was dis- 
turbed. 
PNEUMATIC ROAD SCARIFIER. 
The .Austin- Western Road Machinery 
Co. have recently developed the Austin 
pneumatic road scarifier, which is suited 
for repairing earth, gravel and macadam 
roads that have gotten out of shape to be 
regraded and rolled. A machine of this 
kind could also be used for preparing the 
roadbed for concrete and brick pavements. 
PARK AND CEMETERY. 
as it will root out the subgrade to any rea- 
sonable depth, so it can be easily removed 
by wheel or drag scrapers or other meth- 
AUSTIN PNEUMATIC ROAD SCRARI- 
FIER. 
ods. This machine can be put on any 
standard Austin motor roller without ma- 
terially changing the construction or ar- 
rangement of parts. The general design of 
The twenty-second annual report of the 
Board of Park Commissioners of Cam- 
bridge, Mass., covering the municipal year, 
March 31, 1915, together with the twenty- 
first annual report of the General Superin- 
tendent of Parks, states that considerable 
progress was made the past year toward 
completion of Charles River Parkway. Sec- 
tion E was opened for traffic and tar 
macadam roads provided for Sections 
F and G. The entire roadway between 
Harvard bridge and Alt. Auburn street is 
now in first-class condition. At Section F 
between Western avenue and Boylston 
street over 100,000 square feet was added 
to the park area of the city by filling in the 
river at this point and providing a loam 
surface. At Section F it is proposed to 
improve the appearance of the portion for- 
merly known as DeWolfe street, which was 
turned over to the Park department last 
year. It is expected that Section F. when 
completed will be the prettiest section of 
the river parkway. A tar macadam road- 
way will be provided on the easterly road 
between Harvard and Cambridge bridges, 
and after that is completed work will be 
begun toward providing a permanent road- 
way on the westerly road at this point. 
With the building of these two roads and 
also the work at Section F, the river park- 
way will be very nearly completed. Not 
much progress was made toward the com- 
pletion of the playgrounds system, because 
of the smallness of the amount allowed for 
construction and equipment. .At the Mill 
Pond Playground a fence was erected, a 
new surface provided and over 450 trees 
planted. The afipearance of this playground 
has been very much improved and with the 
erection of a shelter and the field properly 
147 
this scarifier consists of a cylinder at- 
tached to the rear end of the roller frame, 
to which pressure can be applied from air 
storage tanks mounted on either side of the 
cylinder. The cylinder is connected to the 
scarifier by a connecting rod pinned at each 
end, which prevents any straining or twist- 
ing of the scarifier attachment transferring 
undesirable vibration or strain to the cyl- 
inder itself. The scarifier attachment con- 
sists of a hinged frame hung on the rear 
end of the roller frame. This hinged 
frame is spanned by a steel yoke attached 
to the lower end of the piston connecting 
rod, so that the downward pressure of the 
piston will force the scarifier teeth into 
the ground and keep them there during 
work, and by a simple reversing cock the 
pressure can be applied to the lower end 
of the piston and quickly raise the teeth 
out of work. 
supervised this will be one of the most 
popular and best equipped of the larger 
playgrounds. At Cambridge Field, it is 
proposed to lay out the portion east of the 
shelter for a children’s playground. Bleach- 
ers will also be erected on the ball field. 
At Rindge Field, bleachers will be erected 
on the southeast corner and the diamond 
rearranged. It is also proposed to take 
a portion of the nursery grounds and use 
it for a children’s playground. At Thorn- 
dike Field, a shelter will be erected this 
summer. This will complete this field, 
making it the most up-to-date playground 
in the city. At Russell Field, an additional 
locker building, storeroom and room for 
women will be constructed under the base- 
ball bleachers. No work was done on any 
of the smaller playgrounds the past year, 
and none will be done the coming year 
with the exception of a fence at the Sleeper 
School, owing to the small appropriation 
allowed for construction. The most im- 
portant feature of the summer’s work was 
the organization of a number of inter- 
playground leagues and the stimulation by 
means of inter-playground competition, of 
a live interest in almost every form of 
playground activity. On account of the 
small quantity of Brown Tail moths with 
whicli the commissioners had to contend 
the past year, the expenses of this branch 
of the department were about $2,000 less 
than they were the previous year. This 
was accounted for because of the fact that 
when the moths were in flight last Jtily, the 
wind was favorable to Cambridge, that is, 
very few of these i)csts were blown into 
that city from the surrounding cities and 
towns. The money thus saved was used 
for the trimming and removing of dead 
trees. 
