Geology and Natural History. 147 
i 
: gree perfectly. : 
planation of glacier-motion given by Mr. Moseley (Phil. Mag., Jan. 
Ney eRe a a Tele Pe NEES aN Ne ee fos ae 
ae e 
et 
=. B 
: = B 
ee 
ag 
bo] 
<_ 
oOo 
m 
oO 
9°] 
=) 
Sit 8 aaa eemirg: GA Fae, 1a ed Ie eee Res A= ee ages 
ion. 
vm ave not the remotest intention to summarily reject Mr. Mose- 
€y’s views; but I thought it admissible to state what at present 
yents of the interior temperature of glaciers, give his views 
better foundation. 
8 On Sigillaria, Calamites and Calamodendron.—Dr. J. W. 
eon, in the Q. J. Geol. Soc. for May, 1871, discusses the 
pon. e tissues of the Sigillarie, and the character of the 
8 (Trigonocarpum and Cardiocarpum) which very often 
pa 
“ (8) Mm: ‘ el 
ing over the interval between the higher Acrogens ai 
mites on one side and the Lepidodendron on the other) an 
