i 
Miscellaneous Intelligence. 159 
power, evaporative power, and temperature of combustion. The 
geological horizon of the Yesso coals is not gi i 
from the following remark by Mr. Munroe that they are probably 
of Tertiary age. “It will be seen on inspecting this table” (com- 
parative table of coals from different parts of the world) “ that 
these Japanese coals are widely removed by this composition from 
all coals of similar age, and can be compared with the best Carbon- 
iferous coals. They are therefore neither lignites nor brown coals, 
but true bituminous coals.” This statement the analyses given 
fully sustains. 
. Supplements aux Notes sur les Tremblements de Terre 
ressentis de 1840 a 1868; pp. 70, Bruxelles, 1873; and Note sur les 
Tremblements de Terre en 1870 avec Supplément pour 1869; par 
M PE raire a les Facultés des 
trembling reported at Pulkov , 1867, the author notices 
several observations of slight earthquakes made known only by 
the unusual oscillation of the levels of astronomical instruments. 
ducted in Peligot’s laboratory, at the Conservato et 
Metiers, and son examples ot ‘the blue frit were then made at the 
National Porcelain F actory at Sévres, under M état. The 
of chalk, 15 of oxide of copper, and 6 of dry carbonate of soda, 
yielded, when fritted together, a blue material said to be equal in 
Poet texture, and durability to the ancient examp es.— Atheneum, 
une 20. 
6. Magnetic Observatory in China—A magnetic observatory 
has been established at Zi-ka-Wei, in China, under the superintend- 
