< 111 v 



surface of the two glass 



Whlrll thr e|c-tnr artlo,, . rl 



. ' f. 



rid 



(The volatile prod* 

 h decomposition turn la mos paper blue, 

 indk-atingthatan.i. 

 observes, In hi pa|*r. t hat the condition! 

 which argon t. r..n.|..n.r.l >> hyln- arU,,,- tn.d 



t.. ajeSEti , - .. - -.: ..in ism M. 



it research that the action 



iient discharge WM accompanied with a 



violet glow, visible in darkness; and on 



one onoasinn a fluorescent body WM formed 



which gave out a 



a 



fa 



litfhi.m which 

 .the conclusion WM drawn 



pond d HI ' H ! Usll ' j- :'- ' '.' 

 -! amistono* of a complex state of | U ilih- 

 . h argon, mercury (which i* .. 



, n f m -M-. ::,..-. .:. Wfcj '. ", 



I it developed), and the elements of 



.... fa ft ,. !,.!., ; ,t 



or mtlter a compound 



t --^ 

 rrof. luunta j aiicnuon WM utrBOMu, wniw 



K.I ..-.;.'. '.-.. 



:n.l hiul found given off 

 .,. SSnA | UH Horw^tai BftDard ..-...;,:.: 



which WM mppottd to be nitrogen. The gat, 

 to be almo* free from 



roved to h 

 fen. but to exhr 



. some other hW one of ). 

 fee green-blue, WM specially prominent 

 Crookes, examining the gas spectroscopi< ally, 

 found that ii was 



specially directed, corresponded with the line 

 -lr . hromosphere, 



h;. h i- r- ^.ir'ifl :- in :. \.' ' j ' !. |.r< i,< . f 



at, . lam* d '. n i" !..!.. r'.. to an on - 



earth, to which the name helium ha been 



The same he! wan al*. 



laboratorr at Tpsala. CU-vitc being an ura- 

 miheral. other minerals containing that 



IhuB. Prof Loakwai toad it ta E n*fa 



' 80 roinersU studied by 



were found to contain helium ; itn<l th<- tnvesti- 

 generally indicat. mm b re- 



tained by minerals oonsisting of salts of ura- 



hohum : 

 la conditioned by the uranium, the 



M. or the thorium can not yet be decided. 

 Meteoric iron, heated in a vacuum hae yielded 

 meay small amounts of argon and 



. an.1 coro|ratirplr lar^ quantitiat of 

 ^en. Free argon and helium have been 



rrat.il from certain <>f the Milphur<>u* waters of 

 the Prrenee*. P. P. llren and S. Shaw bare 

 that the nitrogen given off I 

 i.Uesborough.fingwid. containi aU>t the 

 same proportion of argon M does atmospheric 

 Magnesium vapor, when it was sub- 

 mitted to the silent discharge I 



-mni. rapidly combined with nitrogen. 

 Continued action after the spectroioopio evi- 



readily with nitrogen-titanium. boron, lithium. 

 uranium, and fluorine M. MOIMSJI obtained 

 . ill m -v. PI r- - . 



,uy supposes that a closs analogy 

 exists between argon and helium; and that 



; -;...,,. 



ejMJMd .!.!!.r.:,'.V. ",-,.. '.:,:. , . ,- 



meots. Prom the properties of certain lines to 

 jtafrftrtfttn ! jmEthnl Ikq i Bteini m 



ySo^m^ut'^muiAw^yS^^lOu^ 



UM III !!.: *,: -JM ., f . ' . . r : i 



periodic Ubku The density of helium, however. 

 U so low that there doss not appear to be room 



for a large quantity of a heavier gas ; and to flt 



HM peSdi. UM. ',. .-.'.. 



rather I.- diiniiu.hr,| I.i r.-n,..'al -f a ! 



r- than inrrsiani bvrem 

 one. The observations of Dr.OI 

 t !,. atomic weight 80 for argon. and suggest 



r. uunge and P. Paschen flnd a close MM 



en the spectra of 



kal&Tnair 



to believe that the gM in cfovite rnnaJsti of two. 



and not more than two constituents, of which 



whose spectrum is altogether the stronger one 

 while the other ought to receive a new 

 researches of M. Lecooq de 



the rvlatmn nm- i..; thr atom 



MIM some 

 the existence of a family of elen 



hitherto Known, and of even, or 



whoat 



of which 

 octo. atot 



Vmld u :- 



two.havinf tkl 

 '86-40. w 



in X,- nilar 



Mr. r. J. Reed in paper* 



baj 



!' 



baudran. his 

 ponding with the 

 of aneJawjeM 



-f 



" 

 .... v , 



ha.1 a place < 

 rtghti.THie 







mark by 



ttl* 



harmony with a re- 



baUunkthai - ., 



or three. 



bnth of solar and stellar 

 be ronflrmed. we are evident 

 of a new order of gaeas of 



in 



if this 



