Albuquerque weekly citizen. (Albuquerque, N.M.) 1891-19??, 1894-12-29
EARTHQUAKE INDICATOR
Telephone to DO Uscd In NO xico
FOR That Purpose.


Senior Francisco Estrada. prof cssor
81 physics In the state college ~ san
Luis potosi, Mexico. has submitted an
original plan to the government for
forctelling earthquakes In the volcanic
zone ~ Mexico, 10y means ~ the t.lc.
phone, says the II. Louis GlolE.lsmo.
crat. Since the strong earthquake
which visited the Valley ~ McAico ON
November = last, killing eighteen per
sons, he has made special study ~
this class III disturbances and their
preceding signs lie has lTyn 'uaking
n long study ~ means ~ prediction iur
| these destructive disturbances, AMI Is
sure he has made discovery ~ value,
which value can only H. appreciated
10y the inhabitants Of the volcanic re-.
gions In the course of his very inter.
cstinR report the author says:
with the telephone and the more
recent invention, the micruphnnc, and
!, VII daily simultaneous observations,
taken In the volcanic zone, which com.
priscs Vera Cruz, Pucbla, Mexico aud
Guadslaj ara, believe IL possible "a
definitely prognusticnte earthquakes
md volcanic cruptiuns, a. the result ~
the great interior changes ~ the earth,
which change the geological construc.
tion Of our land. The noises hat
trouble our long.iistancc telephones
tina, use the earth Ia complete the cir.
cults, noises hitherto unexplained. I
believe from my repeated observations
arr originated from two principal
causes, atmospheric electricity aud
underground electrical currents, which
come from depths more or less great.
In the first case they are easily dis
tinguishcd by exterior signs, such as
storms, thunder, lightning, etc, hut
there are times when, the air Icing
perfectly still, singular noises like
murinurings, sand storms. blows or the
rubbing ~ n rough body upon the ia.
strumcut are heard at the telephone.
A. this instrument IN the most S.nsI.
tive known, judge Il is suitable for
the recognition ~ the approaching
chronological phenomena, which cause
such great terror - the iuhabitan, ~
volcanic zones Propose the rational
study ~ these phenomena 10y the FOL.
lowing plan;
construction of various telephone
lines; let one connect the central gov.
eminent meteorological observatory
with the basc ~ the volcano p,prat.
nprtl, hping grounded in one ~ the
deepest cracks ar crcvaNScS, selecting
among them one containing IA thermal
spring, connecting the other end - the
line ut the observatory with the metal.
lie tube Of one ~ the deepest nr,rsian
wells in the city. Another line should
run from pucbla Ia the same mountain
nnd then connect ,.uadalaj arn with the
volcano Of Colima, and later lines
should (r run ~ the pcak ~ DriGaha,
the CnfrR de- Pcrutc, and the Joru,lc
volcano. I would place nj ,cas, two
telephones and one vertical galvanuin.
ctcr ut some convenient sp,t midway
in the telegraph lines from Vera cruz
Ia l'nc,la. from Puchla Ia Mexico City,
Ia iuadalaJara, ana Iuadalalara tn
San HAS, or some other Pacific port
that has u telegraph office Ia take daily
observations with the telephone, In
each one ~ these branches or sections,
and with nll the lines connected As
often NJ possible without interfering
with this service ~ the wires, the plac-
ing In the obrrvatorics At Mexico, ru.
ebla and GuAdalajara Of simple
micrnphonc composed Of carbon pen.
dulum suspended "a. tin spiral wiro
~ arranged that II will cloNc an clcc.
trio circuit nj the slightest motion. and
t.'t an electric bell IA ringing, in order
a. record the slightest movement II
the earth. II properly handled by
these means the eruption Of any vol.
cano and earthquake nigh, Ia forctold
many days In advance"