New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1866-06-15

tho examination of every known substance with the
greatest zeal lie and Kifchhof determined the lina9
formed by all Of the known substances aud they fouD4
new lines which they thought must be due to new bodies
They gave the name of Rubdium to the metal, wnlct
yielded red line very to the potash Line and outsids
Of Faunhofer's line A. Having discovered and names
the new element the next thing study its prope<s
ties and ascertain where il could be found
They first detected 1t In mineral waters after"sdN
found 70 exist in small quantities IN epdoe, elds
par carnalte, crude sapeer tobacco, coffee tea sugaa
beat commercial potash triphyne and other minerals
Metallic Rubidlum can be prepared from the b-tarTaN
in identically the Potassium. IL IS more
difficult 10 reduce than Sodium, but more easy thaA
Potassium IL melts at 2Oi +. POTASSIUM iA' f''
Lithium 1867 F.
The atomic weight of Rubidium il 1886. 1t decom-
poses water the the other alkal metals Inc
salts Of Rubdia resemble those Of potash and soda Ihs
iarates and the platinum salts vary IN sciuoty ohef
wise II would be difficult 70 distinguish between then
II now remains 10 discover some mineral containing
sufficient Rubdium TO enable 10 study its use IN ee
arts. One of the richest minerals is the lepdote OF
Hebron, in Maine according 10 johnson and Alien OF
NewHayen this contains Ia per cent Of the oxide o.
Rubidium.
1t is probable that metallic Rubidum will ever play
important in the arts but it's salts may possess
different medicinal properties TO potash and soda Just az
ha is given ssa Substitute for those alkalies Whas
properties this aka wouid mpart 10 glass also cmains
question for the future We may discover il in s1iti-
Gent quantities for in the manufacture Of soap
CEsIUM
This metal was discovered at the time and sndee
the same circumstances Rubdium, by Bunsen end
Kirchho BuDsen in his capacity of Counsellor OF Stase
is called upon for advice in sanitary matters, and every
thing relating 10 mineral springs submitted 10 MN iof
examination He had the resdues from the eyaporatioa
of an enormous quantity of the Duerkhemer Spring sens
10 him. He took 900 pounds Of this water, and "eS
able 70 prepare from it few grains OF the OXIDE Oh
Casium upon which TO found his investigation into ~
properties. IL appears ia be less abundant than hupn-
nm aud the comuly found associated together:
Bunsen was not able to determine the atomic weign' q
Casium with entire accuracy upon the small quantity -
his command and this valuable work was accomphshsa
by johnson and Allen of Yale College. They give me
atomic weight 1884, hydrogen being taken a. unity.
has the highest atomic weight Of any OF the elemens
The salts of Cesium produce sky-blue lines on ths
spectrum, and hence the name.
Cesium and Rubidium in all their compounds, resem
bic potassium closely that they cannot be distinguishes
from il BIZ reagents before the blow-ppe Ihcy csa
only be recognized by means Of the spccroscope ah
render that instrument indispensable to the analyucA
chemist
Rubidium and Caesium yield alums with aumina ana
sulphurc acid and the difference IN the souby Oh 1ssss
sails affords method for their separation.
The ratio of soubility of the Aums is: