318 F. D. Adams— Chlorine in Scapolites. 
was thought that the deficiency might be due to chlorine, 
which had ae overlooked in the analyses. Accordingly four 
teen specimens of scapolite, from different localities, were 
selected and acaniioied for this element. It was found in every 
Ir aay re" +1 
Chlorine. ; aay + | a red heat. bat i 
Gouverneur, N. Y. Cl. pres. — —_— None. 
Lewis Co., N. Y. ONE Toe ae See 
sie ae Orange Co.,N.Y.) “ ea =o CO, pres. 
Monr nn. “ “cc ‘ies, ening —_—_ 
Bolton, Mass, oer Reap info —— Sees me CO, pres. 
itish “ ) tE3c, 8 uate Seek “ b 
Pierrepoin t wy « t  |H280, pres. oe ra 
Meionite, a  Somine, ies * P 2 soe oe 
Arendal, N “ +t “ be ee CO. pres. 
jd, Wee, ; i bb “ eatin “ “ 
Templeton (21st lot of 
12th range) Queb., mas oth ae ee — me ie 
ive an ded. 
ipon (13th lot of 8th range), 
Quebec. High lustre. 2-411 | -796 (SOs) “122 None. 
Ripon (1 res lot of 8th range) 
Quebec. Less lustre. 1-468 ponies 1-496 CO, pres. 
Ripon (13th lot of 8th range) 
Quebee. Less lustre. 2-011 —- ce ge 
Hull (8th lot of 14th range) 
Quebec -2026 |H,SO, pres. —— aes 
Trumbull, Conn. 1:783 —— 337 None. 
Kokken, near Kragerée 
Norway. 2°013 |H.SO, pres.|(2) 1°903 COs, pres. 
Passauite, Passau (Schaf- 
hautl.) 924 — 1-2 (water) | ——_ 
determined the amount present. hen the mineral contains — 
only asmall quantity of chlorine, as in the cases of the specimens — 
from ndal, alsjé and Templeton, it cannot tected 
with certainty by igniting the mineral, but it is easily found by 
Rose’s method, which will be mentioned farther on. pis order 
to ascertain what quantity of chlorine must be prese the | 
mineral to be detected by the ignition test, the aeapalite “from, 
