Fort Worth daily gazette. (Fort Worth, Tex.) 1882-1891, 1886-09-06

4
especially from points near It's limits,
2. AT what hour, minute and second o
standard time was II feltg
.. How long did Its perceptible motion
continut2
I. Was It accompanied by any unusua
noisef II so, describe It.
.. Was there more than one shock felt
II so, how many. Where several wer,
lett, give accurately or even roughly n,
number, duration and character OF each
and tho intervals between them.
8 Which OF the following measures OF
intensity would best describe what han.
pened In your vicinityg
No. l. Very light, noticed by few
persons, not generally felt.
No. 2. Light, felt by majority OF per.
sons, rattllng windows and crockory.
No. 3. Moderate, sufficient to upset ob.
lects, chandeliers, etc, swinging, or TO
overthrow light objects
No. 4. Strong, sufficient TO crack the
plaster IN houses or TO throw down some
bricks from chimueys.
No. 3. Severe, overthrowing chlmneys
and lniuring the walls Of houses.
Z, Do you know of any other causes for
what happened than an earthquakef Give
also any further particulars OF interest
stating whether they are from ohserya-
ton or from hearsay, for instance whether
the shock seemed like u tromor or Jar, or
had an mandatory movement and whether
II seemed TO come horizontally or yertl-
cally, whether any Idea OF the
direction OF the shocks was formed, and
II people agreed In their opinion as %
such direction. Mention any unusual
condition OF the atmosphere, any change,
the eject on animals (it " often said they
VIII feel the first tremors OF shock,
sometimes before the people notice II at
ALL, the character Of the damage TO build.
ings, the general direction in which the
walls, chimney ETC., were overthrown.
! Springs,ryers aud wells are often notice
ably affected by even slight shocks, end
such facts are especially interesting. II
q clock was stopped give the time II midi.
Gated ard some idea 90 10 how fast or
slow 1t was, its position, the direction In
which II was standing or fsoing and the
| approximate length aud weight OF the
| pendulum. II q chandelier was noticed
TO swing decidedly describe, itland state
the direction Of the swing. Ii pictures
swung, state the direction Of the wall and
whether the pictures on the wall at right
angles TO 1t were also put in
motion. II doors were closed or opened,
state the direction OF the wall in which
they were set. In short, hardly
any fact however apparently insignificant,
regarding this great earthquake win not
come amiss, ana II Is probable that from
the mass Of information to be gathered
| data OF great scientific value will be de.
uuvteu' ~ - requested tnat TINS infor.
nation shall be sent TO the division OF
volcanic geology OF the geological survey.
~ 70 p,ouaoie tnat ue,ore the ond OF the
yeeI oluoolave, thoush necessarily rather
,neA pohsise arrangemehts lor the more
snoiousn ooservatlons 6nu STUDY OF earth
IueAes yvvulrlnk "a az parts oI inns con-
| slen' WILL ~ poIiecteu ana put m oper-
ason' iuosc aIranRoinents naVe Deen ID
PIoRress 10. year or more ana tue Hd-
Fanoeu stuuents VI tnis orhnch OF natural
sclenoe AIRY interesting themselves IN the
mVlA' Instruments Oh great uelcacyi
.nouBn slnple IN their construction ana
operation, nave long Deen 10 use Tor auto
,na,lcany recorulng eartn movements.
eInaPs sne oest mas lot lts central
feature use OF SMOKED glass reVolved
i1,r IzY ~ CLOCK work. Besides
WIS tnere arc noIl1ontai pendulums deli
oately suspen1ea upon plVots, carrying
Nelsnts u suilclent inerua 70 Keep their
penuui !. ~ restl tnousn tue htands 10
whlSh tney are attaehed may be moved
hacn peneuiuh 0eets az JUS extremity a
pointer wnlcn Delng drawn Overa smoked
uisc as tne iAtler reVolves makes true
clrcie 80 lohg ~ lne earth remains un.
moved, put Win the slightest movement
.helr course Is disturbed ana their record
rs seen IN waving or Jagged lines around
tne ulhc. Two OF tnese pendulums are
required Ior selsmograph, one record |
ing tne east ana west movements, the
otner those north ana south This instru-
,nvns - Wy uelloaee anu coiipiea LOT use
o .' y. ooseryatories anu iabratories
r wne,u ~ onh nhNe .he at.en.lon OF trained
o eoi,,, out announcer anu nuch simpler
u .. mas nearly peen peIiectca winch |
pvposeu shaiI DC placed IN the
MINUS " volunteer observers IN many
p i'al., ~ .ne County. consisls OF
,,, i.i.ai pou ~ Wnose point nangs
~ -. w ~ " ne,euly, upon we SURFACE
" WHICH, iiSs pisllnutn noav' smai
h sssion ~ .ne noas recelFes inc point
mt'nous lnaAlng hctual CONTACT, except
ths aioc,r,csI .i,.,,i, .nht,a l..,
The mschinsrv ~ m o,dirs,. cIo ~ ioI,yn
,bat oni,, 60 800, isi9
~ tbese ir ,ns U1 ~ w. nunuleu
ont Thaoa nil 5000 PN III, ~ =, ~ p,vs
No., "a 49, ,,.h,.,.,.s V'y Wy ~, ~ s 81