The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1869-12-02

The "Comtng" Pavemcnt-A Wonderful De-
liquescent SaIt-Importnnt Changes.

The "Coming0 Pavemcnt-A Wonderful DE.
liquescent SaIt-Imporfnnt Changes.
The Commissioners or the Park have for some
time been introducing improvements In street
sprinkling, which Is now extensively and SO un-
satisfactorily performed. They have imported one
OF the small rrigating machines In in Paris such
as are seen on the Boulevards, and though having
tried 1t at the Park during the summer are not yet
satisfied either OF Its efficiency Of Its economy for
general and extensive use.
AN IMPORTANT SUBSTITUTE FOR STREET sPRISKLISG.
The Commissioners are also examining into the
merits OF deiiquesoent salt lately brought into use
in Europe. 1t Is said, with great advantage. THIS
agent has properties which have been developed
under various degrees Of practical test, which, II
they VIII for all atmospheric conditons, Will
constitute this discovery OF the most important
OF the century. 1t claimed that by applications to
the ground this salt produces an amount OF mois
ture that answers every purpose obtained by sprnk
ling No mephitc vapors or deeterious odors arise
from It's USE as far as known, and Is is believed that
something has at last been found that will AFFORD 70
the overheated pavements Of New York q relief from
the Injurious temperatures baking out the vitality
from residents on this island.
STREET sPRINKLING.
With this matter Of sprinking, as with the several
sorts of pavement that are brought into public
test thoroughly those that appear to have any value
whatever. Trials Of them are upon small. but
sufficiently extensive scale to enable them to decide
whether they should be rejected or whether they
worthy Of more extended use.
The watering Of streets ana roads has only within
few years been recognized as necessity In our
Cities The machinery for the purpose, at hrst very
crude has been gradually improved, but is still lar
from being satisfactory. 1t s difficult to guage and
control the amount Of water to be delivered on the
roadway 80 as TO meet the rapidly changing condi-
lions OF the ATMOSPHERE y Cannot be done dns. by
ton OF ethe weather and the adaptation OF the guam
THY OF water 10 the existing condition OF the
road and the weather require nicer discrimination
than is given to IT. The amount OF water on the
roadway which in one hour will fastcn the dust and
render the road agreeable will at another hour
OF which the water is distributed Is In itself great
encumbrance to the roadway.
cred tolerable, and modern Improvements In cities
call for new methods avoiding dust, not merely for
the comfort Of those who travel upon the road but to
prevent the great waste and loss done to Gil kinds
OF goods by the all.permeating nuisance
Very much may be accomplished BY the original
proper construction OF streets, not only or their sur
face but OF their sub-structurc. Much may be &C.
complshed by sweeping and washing the streets;
the rest must be- left 10 other means.
The results of the experiments on the PARK In
improvements IN all methods OF beautlfying ana
rendering more commodlous and agreeable the
In the employ Of the Board is permitted TO give q
certificate that can be used as pun or advertise
Aucub VI oil lANcnsiou. Auo AooWLs VI uiooc CAPoip
ments show for themselves, and for this reason the
appreciation OF the Park Commissioners Is sought
for by the inventng class, and because OF the care
exercised In expressing opinions on these subjects
the whole country regards testimony from this
quarter with respect.
PAYMENTS.
The Park Commissioners, among their other labors
have come to be regarded az rellabe examiners OF
improvements in the matter OF construction Of
pavements, OF roads aud walks, OF materials for
house construction and other kindred purposes. and
In this they are rendering the public quiet but
essential service.
When an inventor or promoter OF any pavement
or other article brings forward the fact that his art
been used for the Park his great reliance
1t ia well TO inquire whether this use has been q
mere trial.
THE PAVEMENT OF THE FUTURE.
OF all pavements In which the Commissioners are
engaged In testing there none that has come
under their observation promising more than hard
crystazed mineral substance, OF rocky formation,
found in abundant quantities ut Seysel Switzerland
This substance Is dark in color, and Is massed in
Irregular outlines TO obtain the required form
necessary TO work 1t into pavement tho
substance undergoes an intense degree Of heat, Is
gradually fused and becomes o palpable powder.
With this powder sort OF plaster made and applied
to the surface OF the street with rollers which
filed with red hot iron. When completed the pave
ment will last almost forever, and with years Will
gain solldity and durability.
Great confidence IL expressed that the pavement
will. In general, be success beyond what has been
sought for by inventors II Is but slightly bitumln-
been the golden mean wanted. Not to particularze
there are many pavements in the city that have
been utter failures. Now, smooth elastic, durable
cheap and practicable one has been found.