BHOBT 



1-7 





n ins 



I'.ru 



In tin- n,.-ll,-l char- 

 : U*tcf 



.i a lutir horio t^ wbfehemi 



tests that are 

 tests for several inetala, 



these metals are treated with a - 



\ potassium thiooyanate. Tbe films eon- 



f ou.i.-ttn.i -i,:|.h:.i. . parti^ r -1 :. ifjd 



affonlareadym- 



i metal in tbe field. 

 rar has devised an apparatu* f. r 



f any K a in air that is not 

 at a!- 



air to U- . \.-in, n,.. | IH OOOisd m a tuU< 

 with ilimin- 



r the ll|li: of thr 



in the condensing tube ami ih- 



tin- I.M* I-MIIII;: from thr Km-'- w. il at 

 in-, a li'im-l was obtained 



liquid 



; rTiit to 

 It u- 





ne jiart |NT 

 seem, further, 



1 benzil as one 

 < products of the action 



M. If the H. -I ion is COIltiiiii.-.l the 

 .i|>|N>ar HI 



lu>t and acetic 

 that tin- author has 

 



.tit nit of bentil are 



tfial aceli. _-ht or 



M Of 



.n- <>f th. oily com- 

 The 



sut hor describes a met h.-l l.v which he proposes to 

 fltul rely slight ; forms 



solid com pou n<l. 

 i rally iomerie with solid 



luck'* ei:. 



: until they an- unif 



i ami an- (tarn at a 



i he dning oc- 



- about seventy hours. Sometimes tbe allni- 

 .iml allow- Tbe 



- b sometimes bastened by the addir. 

 some chemical. Thr impurit i.-< rtss in the froth or 



ohumen b drawn off ami 

 volks are utirrcd through sieves ami 



Salt borax, acetic acid, ammonia, bonde 



lori.le. arc u*ed in r 

 1 escribed in the I'niied 



lone, now 

 me so ea> 



- Vlerbeura for the quantitative 



the ssparauon o , 



lane prestnu tbe advantage ova? ulphurette 



rsucb uar, in thai it ;u-l,Ua ; 

 thai an U fin washed v. 



not easily become ^gHintd afnl ness 

 rssbsd pradpilata is finally dV 

 i. is fll. 



ignited and weighed as oxide. 



Mi/ -ij ! .!.. - ttk| V A] -\! I - 



-. :. ,, . .,, . 



.and weighing 

 before and aft 



In practice the best results have been 

 with . straight narafln oil. with a high 

 at thr oil may be so freed 



of it will br 



ried off with the moisture in the substance to be 

 the whole operation may be 

 completed in t tea. 



The use of coke U suggestel t>\ II U < .arkeas 

 lOdent malrrialihan sand for the removal 

 rrom certain olsssii of w a t . r-. The 

 nents made in Prorincetown, 





removal of iron from a water which doss not yield 

 uple aeration and filtration Lesrb M. Baft- 

 recommends the use of iron and alum. 



<ng crystals of haloid salts of 

 potassium ami sodium D| purely chemical means, 



- : . tafa 

 if. 



through thr ardon ,.f the vaiwr of 

 n|-.n th.ru. ha- - i. f' UI..1 I.N ... .. 

 nwlily deveI..|Mi| by hratm^ in a lov tuU-. at.. I i% 



employed. 



at.l p.tiijiium bromide and iodide an 

 ored < : potassium chloride dark heliotrope, 



and sodium chloride yellow to brown. Tbe color 

 appears to permeate the whole crystal, and i- 

 manent in t !,.- air and also in water so long as the 

 crystal is undissolved. The solution is colorless 

 and gives a colorless residue. On healing tbe color 



'TnTTndigo prism, used for tbe detection of no- 

 tassium b\ the flame test, is 



>s given bv lithium, etronliura. 

 calcium, and barium compounds, a* well as those of 

 potassium salts. An intr 



wever. opaque to the red rays of 

 lithium. tn>ntium. calnuro. and barium, while it 



-j-ar.-nt to those of potassium salts. 

 In th. Seyfert process for making artificial silk 

 . ..t ton yarn, the cotton i treated with a cold 

 austic soda, and then dried on a 

 uder strong tension. The yarn is 

 or aft.-rwanl thoroughly washed and dried. The 

 new artificial silk to Terr strong and nonmlam- 



mable; ami it 

 jun- lulu-- 



(lermoehamical method to 





: ' .:.- 



of which the equivalent of an add or 

 when the com- 



a lw- may 

 j.niml i- of i 



\t..i.,., \\, uh tv-The result* of Wdetermfaja- 



- atomic weight of tungsten from the in- 



oxide, made by W. I.. Hanlin. nhow a maximum de- 



TiaUonofoneandahalfn 

 The a .res that a discussion of tin 



suits, ith a vi-w ,.f arnvnif; at the true atomic 

 irtton. vould be muless. that to take the 

 of a lory, and 



that there seems to be no reason why one result 



any ofber. It 



to added that nothing definite was cjtabUsned in 

 regard to the occlusion of hydrogen by tbe metal.. 

 The results obtained by cooling in a 



