364 J. M. Ordway on making Caustic Soda. “ 
V. ZEOLITE SECTION. 
(Related to the Feldspar Section.) 
1, Anatcimz Grovp.—(Related to the Leucite Group.) 
Analcime, Glottalite, Ittnerite. 
2. Cuapazirg Group.—(Related to the Nepheline Group.) 
- Chabazite, Gmelinite, Levyne. 
3. Gismonpine Group.—(Related to the Nepheline Group.) 
Gismondine, Edingtonite, Faujasite. 
4, Narrouire Group.—(Related to the Feldspar Group.) 
armotome, Scolecite, 
Phillipsite, Faroelite, 
omsonite, Mesolite 
Natrolite, 
5. Sritprrz Grour.—(Related to the Feldspar-Group.) 
istilbite, Brewsterite, 
eulandite, Stilbite. 
VL. DATHOLITE SECTION, 
(Related to the Andalusite Section, Euclase Group.) 
Datholite. 
Art. XL.—A New Mode of Making Commercial Caustic Soda ; 
by Joun M. Orpway. 
In the manufacture of soda by Le Blanc’s process, much 
to 
d would be very gr 
bore a juster ratio to that of soda 
a regu 
at, if the 
