Physics and Chemistry. 71 
Luigi Palmieri has been translated into German by Heinrich 
Discher. Professor vee has conducted electrical observa- 
tions on Mt. Vesuvius for many years, and entertains views on 
the subject of atmospheric electricity which differ from those 
enerally entertained by other physicists. He believes that the 
electricity of the air is not conducted to water droppers and to 
tion. He does not believe that the Thomson water dropper in 
pale with a Mascart electrometer affords a true indication 
the state of the atmosphere... An observation on the electrical 
vate of the atmosphere should always be accompanied by obser- 
vations on the state of the sky with respect to clouds and with 
respect to humidity. The loss from poor insulation in connection 
with apparatus for continuous registration of atmospheric elec- 
tricity is ain insisted an argument against the employ- 
ent o sent me Professor Palmieri therefore urges 
the emplo t of a simple electrometer strongly resembling 
‘that: of Peltier and the sudden elevation of a metal conductor in 
arth Currents—A number of telegraph lines, above 
ground and also subterranean, have lately been put at the dis sae 
of M. E. E. Blavier, Inspector-General to the Minister of 
and Telegraphs of France, in order to study earth currents. Soha 
0 
gelatino-bromide paper upon which was received the image of a 
‘slit of a lamp reflected from the mirrors of three palenchimdlees: 
The latter were connected with three different telegraphic lines 
running in different directions. The aperiodic galvanometer of 
M.M. Marcel Deprez and D’Arsonval was employed: and large 
resistances were intercalated between the earth | sdaobioden: These 
resistances were as high as 10,000 ohms. The observations were 
i 
could be undertaken over extended areas in different countries 
our knowledge of the change of “rypmiss otential at different 
points of the earth’s surface would be m increased.— : 
8 a Telluriques, par E. E. Bla peste Pass, 18s; HE 
of the Electrical Congress of 18 4.—At the Elec- 
trical Sonitens held last April in Paris the vee values of the 
m in terms of a column of et one picnarsepe ant in ‘section: oe 
