Scheerer on Isomorphism. 73 
18. Halloysite. 
(1.) Fi ie biegey according to Berthier, a4 ae 
~ 23°35: 18-24: 4-74, Ae ge 
2 ) From Guatequé, a S| to Boussingault; ~ “ 
23°90 : 18°78 : 4:94. 
4 (3). ~ rom * ectomey according to Bertie, ik is 
- 24:26: : 5 Soe 
enact 2 Tana me bom j 
. 63 1 18-29 ; 4-48 ree ee 
93.601 18-40: 4-60 (BR)? Si+4AL Si, 
Naver of diploite, (according to Rammelsberg.) In nse 
halloylites, (R) consists entirely of mele toaeeite @) alka 
b oresoety 
| Gr piece ay Gitbertite. “(Lemme 
: - he hg ek (Ry Si+0RSi. 
‘ ¥ Sa =4#17Ca, 1-90 Mg, 4-25 E. 
7 vs -_ a ey 20. Cerolite (Maal) ol * ¢ ™ 
§ 19°72: 5-69: 1316 
19:50 : 6:50 =:1300% — AR)? Sit AS, . 
formula of massive gebilenite} and of the Sala “mica. “is a> 
nm, 18-02 Mg. ni oe 
| RE. Chhondlerite. (v. Kobell.) pint 
a 242 : ~~ ae 
_ 18-54: RE Ne oy carta i 
a , cmeone ea 
‘ ype 22. Mountain Soap, Pape 0 95 (Picinus.) “3 
ee. Gk ait il ae sy oe 
co er 12-00: 12-00: 200 ¢ = (Ry BF RAS: sae 
(R) =3-41 Ln, 1-1 6a, 48-038 a i pe 
The. above men s minerals,’ _ hitherto 
| been looked upon as hydrates, poommartet the introduc 
tion of the water as a 3 aor constit 
—e 
“ i 
a Thiele cal i f 
