Review of Dana'sMincralegy. 385 
Names proposed.- Authors. Adentical with. 
Pickeringite, Hayes, | Magnesian alum. 
Polyadelphite, Thomson, Brown garnet. 
Raphitite, Thomson, Hornblende ? 
Rensselaerite, Emmons, Steatitic pyroxene or pseudomorphous jas 
ea ih A doubtful serpentine compound. 
Macneven, Heavy spar, with 6 to 9 per cent. of silica 
Bialite, (of Bergen hill fe Pectolite. [mechanically mixed. 
_ Terenite, {mmons, Doubtful—altered scapolite or augite. 
Tephroite, Breithaupt, Troostite. 
Torrelite, Thomson, Columbite from Middletown, Ct. 
Torrelite, Renwick, An impure red jasper. 
— Shepard, Ilmenite. 
Xanthite Mather, —_Idocrase. 
Punitirae of American localities and minerals.—This is one 
of the many novel features of the present edition. Besides full 
and minute specifications of American localities under the seve- 
ral species, we have them here arranged geographically, begin- 
ning with Maine and following the coast. This list is designed 
to aid the mineralogical tourist in selecting his routes and arrang- 
ing the plan of his journey. 
“In making out this catalogue, the names of those minerals which are 
obtained in good specimens at the several localities, are distinguished by 
italics. When the specimens are remarkably good, an exclamation 
mark (!) has been added, or two of these marks (!!) when the speci- 
mens are quite unique. If a locality that has afforded peculiarly fine 
specimens is now exhausted, the exclamation mark has been inverted 
(i). The more exact position of localities may in most instances be 
ascertained by reference to the description of the species in the prece- 
ding part of the treatise.” 
Chemical Classification, Part VIL—wWe have already extracted 
(p. 874) the author’s views, in which the strictly chemical char- 
acter of the arrangement adopted in the Treatise is explained. 
The following additional remarks are cited from the introduc- 
tion to a second classification by the author, corresponding more 
nearly with other chemical arrangements. Speaking of the nat- 
ural system, he says: 
ey takes into view, it is true, the external characters; but as these 
depend upon the chemical constitution, and proceed from it, they are 
indications of the composition, and unless followed too implicitly and 
without a general survey of the whole oes will not lead to peer 
Vol. xxv1, No. 2.—Jan.—March, 1844. 
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