110° Scientific Intelligence. 
Bases Silica Non-alk. Alk. 
Dipyre pees are 2 aie | 
Marialite 1 23 te oe 
Levcitre Grovup.—  Sodalite je gs all soda 
Leucite ear e all potash. 
Fripspar Grour.—  Anorthite 2 oat AAR | all non-alk. 
Lab i A eek SY : 
Hyalophane Se se rae 
Andesine i ee gear | esd 
Oligocase 1 ):5:2¢ date 
Albite aS: all alk. 
Orthoclase iv. 3 all alk. 
The 
dote group, are here added to those before alluded to. Jadeitehas 
inci : d the 
sp. 
concludes that it belongs to the Epidote group, and has the same 
relation to zoisite as dipyre to meionite. 
It is here shown that this relation extends also to the alkalinity 
of the species. Moreover it appears probable that Saussurite is 
intermediate between zoisite and jadeite, like wernerite between 
meionite and dipyre. 
Th 
the views advanced, as the proportion of alkalies is less than in le- 
pidolite, though not less than in muscovite. is to be here noted 
wor. 
The consideration of the ingesta appears to promise the most 
reliable results if the nitrogen be reduced in quantity until just 
