220 Scientific Intelligence. 
“The following table exhibits the amount of sulphur and of 
iron found in several different coals, and the proportion of the sul- 
phur that could have been combined with iron :— 
Sulphur in coal, -__....__ 0°57 1°18 0-98 2-00 0-91 0-86 057 O74 404 
Iron in co 0-075 “742 “086 -425 +122 -052 ‘102 ‘102 2°05 
Sulphur required by iron, 0-086 848 -097 -486 -139 -06 ‘116 “116 2343 
, by Henry Newton, E. M. Mr. Read speaks of the abundance 
of glacial markings in Geauga Co., and states that their direction 
above the Lak ° 
On new Tree Ferns and other Fossils Srom the Devonian ; by 
Dr. J. W. Dawson. (Quarterly Journal of the Geological we 
e 
dle and Upper Devonian of North America, a great number at 
small and delicate species, which were probably herbaceous; 
but there are other species which may have been tree ferns. it 
the Geological Society for 1858. The original specimen of thas? 
ad an opportunity of seeing in London, through the kindness 
n my paper on the Devonian of Eastern America (Quatt 
Geol. - Society, 1862) T mentioned a plant found by Mr 
Perry, as possibly a species of Megaphyt = 
Scars in two vertical Series; but the specimen was obscure, =“ 
have not yet obtained any other. 
