206 GEOLOGY AND MINERALOGY. 
of land snails and myriapods, in a cylinder only 15 inches in diameter proves 
that these creatures were by no means rare in the coal-forests; and the conditions 
of the tree with its air-breathing inhabitants imply that the Sigillarian forests 
were not so low and wet as we are apt to imagine. 
The little land shell, specimens of which with the mouth entire have now 
occurred to the author, is named by him Pupa vetusta. Dr. Dawson has found 
entire shells of Physa heterostropha in the stomach of Menobranchus lateralis 
and hence he supposes that the Pupa may have been the food of the little reptiles 
the remains of which are associated with them. 
Two examples of Spirorbis carbonarius also occurred ; these may have been 
drifted into the hollow trunk whilst they were adherent to vegetable tragments, 
The Myriapod is named Xylobius Sigillarie, and regarded as being allied to 
Lulus. 
The reptilian bones, scutes, and teeth referable to Dendrerpeton Acadianum bear 
out the supposition of its Labyrinthodont affinities. Those of the new genus, 
Hylonomus, established by Dr. Dawson on the other reptilian remains, indicate a 
type remote from Archegosaurus and Labyrinthodon, but in many respects 
approaching the Lacertians. The three species determined by the author are 
named by him H. Lyellii, H. aciedentatus, and H. Wymani. 
ON THE CLASSIFICATION OF METEORITES—BY THE BARON VON REICHENBACH, 
The following distribution of Meteoric Stones and Iron Masses, in accordance 
with their physical characters, is condensed from a long and interesting paper 
(Anornung und Hintheilung der Meteoriten : von Freihern von Reichenbach) in a 
late number of Poggendorf’’s Annalen. 
Section I. Ivon-free Meteorites of low specific gravity and light color, with 
vitreous crust— 
First Group—Meteorites from: Second Group—Meteorites from : 
Langres, G=3.55. Juvenas, G=3.11. 
‘Bishopsville, G=3.11. Stannern, G=3.07. 
.donsal (Transition member to Se- Constantinople, G=317. 
cond Group), G=308. 
<Section II. Meteorites (almost iron-free) of a whitish or pale-blueish color in the 
mass, with disseminated pyrites; and, in general, a dull crest. Mostly 
cavernous, and more or less brittle: 
First Group—Dark granules absent, or very sparingly scattered through the 
mass— 
A. Whitish Meteorites from: 
Macerata, G. —; Vouillé, G. 8.55; Nashville, G. 3.58; Bachmut, G. 3.42; Mauer- 
kirchen, G. 3.45 ; Glasgow, G. 3.58, Kuleschofka, G. 3.49 Zaborzica, G. 3.40 ; 
Hartford, G. 3.58; Ozartorya, G. —; Milena, G. —; Yorkshire, G. 3.61; For- 
syth, G. 3.44; Politz, G. 3.37; Aumiéres, G. —; Chandacapur, G. —; Kikina, 
G.—; Oesel, G.—; Charkow, G. 3.49; Ekaterinoslaw, G. 3.77; Kakova, 
G.—; Garz, G. —; Apt, G. 3.48; Askoe, G. 3.66. 
