New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1885-10-11
SCIENTIFIC OBSERVATIONS.
TWO LINES or oBsEEvAToRlEs OF Long AND
STATEN ISLANDS

SCIENTIFIC OBSERVATIONS
| TWO LINES OF oBsrpvAroRIEs OF Long AND
STATEN ISLANDS.
ScSmOlOgical observations TO determine ule
duration and extent Of the earth and atmospheric waves
were taken Yesterday on two lines running at right
angles with each other General Henry j. Abbot OF the
United states Corps Of Engineers. had charge OF lhe
obscrvatorics east and west Imc on
Long Island with headquarters at Wlctts Point inc
north and south line was in charge Of Professors W.
Clarke, Of the United States Geological Survey WASH
mgon lie had his southern station on staten Island u
charge of Professor H. NJ Paul of the United states
Naval Observatory At the next station on Wards
Island Professor T. c. MendcuAal OF the
United states signal Service and himself OBJ
served. At Workers, Professor William Iiailock' OF
the United States Geological Survey and student
Thomas Ewing, ir, OF Columbia College, occupied a
station The most northerly observatory Of tho chain
at Vassar College, in charge Of Professor Maria
Mitchell Dr. Daniel Draper took observations on a
number of Instruments at Central Park The
astronomers at Princeton and Rutgers colleges
also made observations in conjunction with the
others
The results OF those observations establish several
interesting facts. They show that the atmospheric
wave was so light toward the wCstwhch was against
the wud-as TO ho scarcely observable the baron
ctcr8 The earth wave. however, increased in volume
after leaving Manhattan leland for distance, and
then sub-ilyd. The atmospheric wave described an
arc Of a circle passing upward from Flood Rock over
the city buildings then settling again. For instance,
thr heavy frclors were ercrptible at the Signal sor
vice cupola the Equitable Building, While no move
meat observable at the base 1t ionkers the earth
trcnor, were much heavier than about Flood Rock.
II remarkable instance that not
-iuvc sc,uogrnph could 3" t"un IA this country with
which to coudIct observations la the most Odern sci
cuuuc manner. This instrument would nave gwen
thry were nLc,y 10 extend 10 practical results can 70
dcducsd from the scientific observations until the whole
taken and compared and deduct Gus made.
Tho results win smgiy show. the dur
explosive
the artificial earthquake tha the treuo was fct before
Observations VIII throw some -At on ,hc mo' emcnts OF
u iry the -r,~uce De-, so FAR advanced that cities
ar" warn b' local -mo-r'p.s OF tie approach OF an
earthquake in time II" escape rom their houses Amcri
scientists hop. 10 advance tine .ceHc, as mrin this
r''nt', ','i'"'A observations on Tie ROO" Eo'N eN
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